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Finding the Fourth Proportional to 8,748.30, 13,122.45 and 8,408.10

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Solution

The fourth proportional to 8,748.30, 13,122.45 and 8,408.10 is: 12,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.30 : 13,122.45 = 8,408.10 : x
  2. Step 2: Convert to fraction form
    8,748.30/13,122.45 = 8,408.10/x
  3. Step 3: Cross multiply
    8,748.30x = 13,122.45 × 8,408.10
  4. Step 4: Simplify right side
    8,748.30x = 110,334,871.85
  5. Step 5: Solve for x
    x = 110,334,871.85/8,748.30
  6. Step 6: Final answer
    x = 12,612.15

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Similar ratio
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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.