Home / 8,272.50-12,408.74-5,818.30

Finding the Fourth Proportional to 8,272.50, 12,408.74 and 5,818.30

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Solution

The fourth proportional to 8,272.50, 12,408.74 and 5,818.30 is: 8,727.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.50 : 12,408.74 = 5,818.30 : x
  2. Step 2: Convert to fraction form
    8,272.50/12,408.74 = 5,818.30/x
  3. Step 3: Cross multiply
    8,272.50x = 12,408.74 × 5,818.30
  4. Step 4: Simplify right side
    8,272.50x = 72,197,766.38
  5. Step 5: Solve for x
    x = 72,197,766.38/8,272.50
  6. Step 6: Final answer
    x = 8,727.45

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Half scale
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Double scale
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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.