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Finding the Fourth Proportional to 8,587.26, 12,778.02 and 8,558.10

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Solution

The fourth proportional to 8,587.26, 12,778.02 and 8,558.10 is: 12,734.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.26 : 12,778.02 = 8,558.10 : x
  2. Step 2: Convert to fraction form
    8,587.26/12,778.02 = 8,558.10/x
  3. Step 3: Cross multiply
    8,587.26x = 12,778.02 × 8,558.10
  4. Step 4: Simplify right side
    8,587.26x = 109,355,572.96
  5. Step 5: Solve for x
    x = 109,355,572.96/8,587.26
  6. Step 6: Final answer
    x = 12,734.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.