Home / 8,439.14-11,632.76-5,781.98

Finding the Fourth Proportional to 8,439.14, 11,632.76 and 5,781.98

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Solution

The fourth proportional to 8,439.14, 11,632.76 and 5,781.98 is: 7,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.14 : 11,632.76 = 5,781.98 : x
  2. Step 2: Convert to fraction form
    8,439.14/11,632.76 = 5,781.98/x
  3. Step 3: Cross multiply
    8,439.14x = 11,632.76 × 5,781.98
  4. Step 4: Simplify right side
    8,439.14x = 67,260,385.66
  5. Step 5: Solve for x
    x = 67,260,385.66/8,439.14
  6. Step 6: Final answer
    x = 7,970.05

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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.