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Finding the Fourth Proportional to 9,328.94, 12,873.94 and 5,137.19

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Solution

The fourth proportional to 9,328.94, 12,873.94 and 5,137.19 is: 7,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.94 : 12,873.94 = 5,137.19 : x
  2. Step 2: Convert to fraction form
    9,328.94/12,873.94 = 5,137.19/x
  3. Step 3: Cross multiply
    9,328.94x = 12,873.94 × 5,137.19
  4. Step 4: Simplify right side
    9,328.94x = 66,135,875.83
  5. Step 5: Solve for x
    x = 66,135,875.83/9,328.94
  6. Step 6: Final answer
    x = 7,089.32

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Half scale
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Double scale
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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.