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Finding the Fourth Proportional to 7,287.10, 10,921.05 and 5,232.70

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Solution

The fourth proportional to 7,287.10, 10,921.05 and 5,232.70 is: 7,842.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.10 : 10,921.05 = 5,232.70 : x
  2. Step 2: Convert to fraction form
    7,287.10/10,921.05 = 5,232.70/x
  3. Step 3: Cross multiply
    7,287.10x = 10,921.05 × 5,232.70
  4. Step 4: Simplify right side
    7,287.10x = 57,146,578.34
  5. Step 5: Solve for x
    x = 57,146,578.34/7,287.10
  6. Step 6: Final answer
    x = 7,842.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.