Home / 8,318.59-11,480.67-4,781.80

Finding the Fourth Proportional to 8,318.59, 11,480.67 and 4,781.80

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Solution

The fourth proportional to 8,318.59, 11,480.67 and 4,781.80 is: 6,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.59 : 11,480.67 = 4,781.80 : x
  2. Step 2: Convert to fraction form
    8,318.59/11,480.67 = 4,781.80/x
  3. Step 3: Cross multiply
    8,318.59x = 11,480.67 × 4,781.80
  4. Step 4: Simplify right side
    8,318.59x = 54,898,243.90
  5. Step 5: Solve for x
    x = 54,898,243.90/8,318.59
  6. Step 6: Final answer
    x = 6,599.47

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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.