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Finding the Fourth Proportional to 8,867.80, 12,242.56 and 5,887.71

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Solution

The fourth proportional to 8,867.80, 12,242.56 and 5,887.71 is: 8,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.80 : 12,242.56 = 5,887.71 : x
  2. Step 2: Convert to fraction form
    8,867.80/12,242.56 = 5,887.71/x
  3. Step 3: Cross multiply
    8,867.80x = 12,242.56 × 5,887.71
  4. Step 4: Simplify right side
    8,867.80x = 72,080,642.94
  5. Step 5: Solve for x
    x = 72,080,642.94/8,867.80
  6. Step 6: Final answer
    x = 8,128.36

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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.