Home / 9,711.70-14,571.60-3,139.90

Finding the Fourth Proportional to 9,711.70, 14,571.60 and 3,139.90

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Solution

The fourth proportional to 9,711.70, 14,571.60 and 3,139.90 is: 4,711.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.70 : 14,571.60 = 3,139.90 : x
  2. Step 2: Convert to fraction form
    9,711.70/14,571.60 = 3,139.90/x
  3. Step 3: Cross multiply
    9,711.70x = 14,571.60 × 3,139.90
  4. Step 4: Simplify right side
    9,711.70x = 45,753,366.84
  5. Step 5: Solve for x
    x = 45,753,366.84/9,711.70
  6. Step 6: Final answer
    x = 4,711.16

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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.