Home / 3,139.64-4,711.08-1,407.92

Finding the Fourth Proportional to 3,139.64, 4,711.08 and 1,407.92

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Solution

The fourth proportional to 3,139.64, 4,711.08 and 1,407.92 is: 2,112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.64 : 4,711.08 = 1,407.92 : x
  2. Step 2: Convert to fraction form
    3,139.64/4,711.08 = 1,407.92/x
  3. Step 3: Cross multiply
    3,139.64x = 4,711.08 × 1,407.92
  4. Step 4: Simplify right side
    3,139.64x = 6,632,823.75
  5. Step 5: Solve for x
    x = 6,632,823.75/3,139.64
  6. Step 6: Final answer
    x = 2,112.61

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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.