Home / 3,139.50-4,332.56-1,723.32

Finding the Fourth Proportional to 3,139.50, 4,332.56 and 1,723.32

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Solution

The fourth proportional to 3,139.50, 4,332.56 and 1,723.32 is: 2,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.50 : 4,332.56 = 1,723.32 : x
  2. Step 2: Convert to fraction form
    3,139.50/4,332.56 = 1,723.32/x
  3. Step 3: Cross multiply
    3,139.50x = 4,332.56 × 1,723.32
  4. Step 4: Simplify right side
    3,139.50x = 7,466,387.30
  5. Step 5: Solve for x
    x = 7,466,387.30/3,139.50
  6. Step 6: Final answer
    x = 2,378.21

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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.