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Finding the Fourth Proportional to 9,275.67, 12,792.96 and 8,154.21

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Solution

The fourth proportional to 9,275.67, 12,792.96 and 8,154.21 is: 11,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,275.67 : 12,792.96 = 8,154.21 : x
  2. Step 2: Convert to fraction form
    9,275.67/12,792.96 = 8,154.21/x
  3. Step 3: Cross multiply
    9,275.67x = 12,792.96 × 8,154.21
  4. Step 4: Simplify right side
    9,275.67x = 104,316,482.36
  5. Step 5: Solve for x
    x = 104,316,482.36/9,275.67
  6. Step 6: Final answer
    x = 11,246.25

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Half scale
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Double scale
Find fourth proportional to 9,276.67, 12,794.34 and 8,155.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.