Home / 5,272.20-7,272.12-4,151.28

Finding the Fourth Proportional to 5,272.20, 7,272.12 and 4,151.28

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Solution

The fourth proportional to 5,272.20, 7,272.12 and 4,151.28 is: 5,726.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.20 : 7,272.12 = 4,151.28 : x
  2. Step 2: Convert to fraction form
    5,272.20/7,272.12 = 4,151.28/x
  3. Step 3: Cross multiply
    5,272.20x = 7,272.12 × 4,151.28
  4. Step 4: Simplify right side
    5,272.20x = 30,188,606.31
  5. Step 5: Solve for x
    x = 30,188,606.31/5,272.20
  6. Step 6: Final answer
    x = 5,726.00

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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.