Home / 7,239.28-9,989.76-5,252.32

Finding the Fourth Proportional to 7,239.28, 9,989.76 and 5,252.32

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Solution

The fourth proportional to 7,239.28, 9,989.76 and 5,252.32 is: 7,247.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.28 : 9,989.76 = 5,252.32 : x
  2. Step 2: Convert to fraction form
    7,239.28/9,989.76 = 5,252.32/x
  3. Step 3: Cross multiply
    7,239.28x = 9,989.76 × 5,252.32
  4. Step 4: Simplify right side
    7,239.28x = 52,469,416.24
  5. Step 5: Solve for x
    x = 52,469,416.24/7,239.28
  6. Step 6: Final answer
    x = 7,247.88

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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.