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Finding the Fourth Proportional to 4,757.86, 7,138.20 and 1,471.19

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Solution

The fourth proportional to 4,757.86, 7,138.20 and 1,471.19 is: 2,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.86 : 7,138.20 = 1,471.19 : x
  2. Step 2: Convert to fraction form
    4,757.86/7,138.20 = 1,471.19/x
  3. Step 3: Cross multiply
    4,757.86x = 7,138.20 × 1,471.19
  4. Step 4: Simplify right side
    4,757.86x = 10,501,648.46
  5. Step 5: Solve for x
    x = 10,501,648.46/4,757.86
  6. Step 6: Final answer
    x = 2,207.22

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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.