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Finding the Fourth Proportional to 8,534.77, 12,801.44 and 2,987.69

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Solution

The fourth proportional to 8,534.77, 12,801.44 and 2,987.69 is: 4,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,534.77 : 12,801.44 = 2,987.69 : x
  2. Step 2: Convert to fraction form
    8,534.77/12,801.44 = 2,987.69/x
  3. Step 3: Cross multiply
    8,534.77x = 12,801.44 × 2,987.69
  4. Step 4: Simplify right side
    8,534.77x = 38,246,677.74
  5. Step 5: Solve for x
    x = 38,246,677.74/8,534.77
  6. Step 6: Final answer
    x = 4,481.28

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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.