Home / 3,139.50-4,332.51-1,742.28

Finding the Fourth Proportional to 3,139.50, 4,332.51 and 1,742.28

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Solution

The fourth proportional to 3,139.50, 4,332.51 and 1,742.28 is: 2,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.50 : 4,332.51 = 1,742.28 : x
  2. Step 2: Convert to fraction form
    3,139.50/4,332.51 = 1,742.28/x
  3. Step 3: Cross multiply
    3,139.50x = 4,332.51 × 1,742.28
  4. Step 4: Simplify right side
    3,139.50x = 7,548,445.52
  5. Step 5: Solve for x
    x = 7,548,445.52/3,139.50
  6. Step 6: Final answer
    x = 2,404.35

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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.