Home / 8,372.35-12,558.53-7,818.81

Finding the Fourth Proportional to 8,372.35, 12,558.53 and 7,818.81

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Solution

The fourth proportional to 8,372.35, 12,558.53 and 7,818.81 is: 11,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.35 : 12,558.53 = 7,818.81 : x
  2. Step 2: Convert to fraction form
    8,372.35/12,558.53 = 7,818.81/x
  3. Step 3: Cross multiply
    8,372.35x = 12,558.53 × 7,818.81
  4. Step 4: Simplify right side
    8,372.35x = 98,192,759.95
  5. Step 5: Solve for x
    x = 98,192,759.95/8,372.35
  6. Step 6: Final answer
    x = 11,728.22

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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.