Home / 5,149.71-7,710.89-4,102.70

Finding the Fourth Proportional to 5,149.71, 7,710.89 and 4,102.70

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Solution

The fourth proportional to 5,149.71, 7,710.89 and 4,102.70 is: 6,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.71 : 7,710.89 = 4,102.70 : x
  2. Step 2: Convert to fraction form
    5,149.71/7,710.89 = 4,102.70/x
  3. Step 3: Cross multiply
    5,149.71x = 7,710.89 × 4,102.70
  4. Step 4: Simplify right side
    5,149.71x = 31,635,409.34
  5. Step 5: Solve for x
    x = 31,635,409.34/5,149.71
  6. Step 6: Final answer
    x = 6,143.14

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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.