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Finding the Fourth Proportional to 8,587.58, 12,881.38 and 2,744.64

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Solution

The fourth proportional to 8,587.58, 12,881.38 and 2,744.64 is: 4,116.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.58 : 12,881.38 = 2,744.64 : x
  2. Step 2: Convert to fraction form
    8,587.58/12,881.38 = 2,744.64/x
  3. Step 3: Cross multiply
    8,587.58x = 12,881.38 × 2,744.64
  4. Step 4: Simplify right side
    8,587.58x = 35,354,750.80
  5. Step 5: Solve for x
    x = 35,354,750.80/8,587.58
  6. Step 6: Final answer
    x = 4,116.96

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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.