Home / 3,139.83-4,332.95-1,723.55

Finding the Fourth Proportional to 3,139.83, 4,332.95 and 1,723.55

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Solution

The fourth proportional to 3,139.83, 4,332.95 and 1,723.55 is: 2,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.83 : 4,332.95 = 1,723.55 : x
  2. Step 2: Convert to fraction form
    3,139.83/4,332.95 = 1,723.55/x
  3. Step 3: Cross multiply
    3,139.83x = 4,332.95 × 1,723.55
  4. Step 4: Simplify right side
    3,139.83x = 7,468,042.80
  5. Step 5: Solve for x
    x = 7,468,042.80/3,139.83
  6. Step 6: Final answer
    x = 2,378.48

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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.