Home / 3,139.19-4,707.17-1,659.20

Finding the Fourth Proportional to 3,139.19, 4,707.17 and 1,659.20

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Solution

The fourth proportional to 3,139.19, 4,707.17 and 1,659.20 is: 2,487.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.19 : 4,707.17 = 1,659.20 : x
  2. Step 2: Convert to fraction form
    3,139.19/4,707.17 = 1,659.20/x
  3. Step 3: Cross multiply
    3,139.19x = 4,707.17 × 1,659.20
  4. Step 4: Simplify right side
    3,139.19x = 7,810,152.38
  5. Step 5: Solve for x
    x = 7,810,152.38/3,139.19
  6. Step 6: Final answer
    x = 2,487.95

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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.