Home / 3,139.08-4,332.44-2,391.62

Finding the Fourth Proportional to 3,139.08, 4,332.44 and 2,391.62

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Solution

The fourth proportional to 3,139.08, 4,332.44 and 2,391.62 is: 3,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.08 : 4,332.44 = 2,391.62 : x
  2. Step 2: Convert to fraction form
    3,139.08/4,332.44 = 2,391.62/x
  3. Step 3: Cross multiply
    3,139.08x = 4,332.44 × 2,391.62
  4. Step 4: Simplify right side
    3,139.08x = 10,361,534.47
  5. Step 5: Solve for x
    x = 10,361,534.47/3,139.08
  6. Step 6: Final answer
    x = 3,300.82

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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.