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Finding the Fourth Proportional to 7,885.89, 11,818.16 and 4,375.71

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Solution

The fourth proportional to 7,885.89, 11,818.16 and 4,375.71 is: 6,557.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.89 : 11,818.16 = 4,375.71 : x
  2. Step 2: Convert to fraction form
    7,885.89/11,818.16 = 4,375.71/x
  3. Step 3: Cross multiply
    7,885.89x = 11,818.16 × 4,375.71
  4. Step 4: Simplify right side
    7,885.89x = 51,712,819.02
  5. Step 5: Solve for x
    x = 51,712,819.02/7,885.89
  6. Step 6: Final answer
    x = 6,557.64

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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.