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Finding the Fourth Proportional to 8,587.13, 12,764.91 and 8,334.89

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Solution

The fourth proportional to 8,587.13, 12,764.91 and 8,334.89 is: 12,389.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.13 : 12,764.91 = 8,334.89 : x
  2. Step 2: Convert to fraction form
    8,587.13/12,764.91 = 8,334.89/x
  3. Step 3: Cross multiply
    8,587.13x = 12,764.91 × 8,334.89
  4. Step 4: Simplify right side
    8,587.13x = 106,394,015.21
  5. Step 5: Solve for x
    x = 106,394,015.21/8,587.13
  6. Step 6: Final answer
    x = 12,389.94

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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.