Home / 5,332.30-7,999.65-3,139.90

Finding the Fourth Proportional to 5,332.30, 7,999.65 and 3,139.90

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Solution

The fourth proportional to 5,332.30, 7,999.65 and 3,139.90 is: 4,710.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,332.30 : 7,999.65 = 3,139.90 : x
  2. Step 2: Convert to fraction form
    5,332.30/7,999.65 = 3,139.90/x
  3. Step 3: Cross multiply
    5,332.30x = 7,999.65 × 3,139.90
  4. Step 4: Simplify right side
    5,332.30x = 25,118,101.04
  5. Step 5: Solve for x
    x = 25,118,101.04/5,332.30
  6. Step 6: Final answer
    x = 4,710.56

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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.