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Finding the Fourth Proportional to 7,750.72, 10,677.91 and 5,388.76

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Solution

The fourth proportional to 7,750.72, 10,677.91 and 5,388.76 is: 7,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.72 : 10,677.91 = 5,388.76 : x
  2. Step 2: Convert to fraction form
    7,750.72/10,677.91 = 5,388.76/x
  3. Step 3: Cross multiply
    7,750.72x = 10,677.91 × 5,388.76
  4. Step 4: Simplify right side
    7,750.72x = 57,540,613.96
  5. Step 5: Solve for x
    x = 57,540,613.96/7,750.72
  6. Step 6: Final answer
    x = 7,423.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.