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Finding the Fourth Proportional to 7,567.55, 11,275.27 and 7,143.18

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Solution

The fourth proportional to 7,567.55, 11,275.27 and 7,143.18 is: 10,642.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,567.55 : 11,275.27 = 7,143.18 : x
  2. Step 2: Convert to fraction form
    7,567.55/11,275.27 = 7,143.18/x
  3. Step 3: Cross multiply
    7,567.55x = 11,275.27 × 7,143.18
  4. Step 4: Simplify right side
    7,567.55x = 80,541,283.16
  5. Step 5: Solve for x
    x = 80,541,283.16/7,567.55
  6. Step 6: Final answer
    x = 10,642.98

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Half scale
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Double scale
Find fourth proportional to 7,568.55, 11,276.76 and 7,144.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.