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Finding the Fourth Proportional to 5,165.56, 7,747.53 and 1,878.18

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Solution

The fourth proportional to 5,165.56, 7,747.53 and 1,878.18 is: 2,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.56 : 7,747.53 = 1,878.18 : x
  2. Step 2: Convert to fraction form
    5,165.56/7,747.53 = 1,878.18/x
  3. Step 3: Cross multiply
    5,165.56x = 7,747.53 × 1,878.18
  4. Step 4: Simplify right side
    5,165.56x = 14,551,217.16
  5. Step 5: Solve for x
    x = 14,551,217.16/5,165.56
  6. Step 6: Final answer
    x = 2,816.97

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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.