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Finding the Fourth Proportional to 7,437.92, 10,264.16 and 4,080.80

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Solution

The fourth proportional to 7,437.92, 10,264.16 and 4,080.80 is: 5,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,437.92 : 10,264.16 = 4,080.80 : x
  2. Step 2: Convert to fraction form
    7,437.92/10,264.16 = 4,080.80/x
  3. Step 3: Cross multiply
    7,437.92x = 10,264.16 × 4,080.80
  4. Step 4: Simplify right side
    7,437.92x = 41,885,984.13
  5. Step 5: Solve for x
    x = 41,885,984.13/7,437.92
  6. Step 6: Final answer
    x = 5,631.41

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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.