Home / 5,001.28-7,496.20-3,128.02

Finding the Fourth Proportional to 5,001.28, 7,496.20 and 3,128.02

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Solution

The fourth proportional to 5,001.28, 7,496.20 and 3,128.02 is: 4,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,001.28 : 7,496.20 = 3,128.02 : x
  2. Step 2: Convert to fraction form
    5,001.28/7,496.20 = 3,128.02/x
  3. Step 3: Cross multiply
    5,001.28x = 7,496.20 × 3,128.02
  4. Step 4: Simplify right side
    5,001.28x = 23,448,263.52
  5. Step 5: Solve for x
    x = 23,448,263.52/5,001.28
  6. Step 6: Final answer
    x = 4,688.45

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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.