Home / 5,105.16-7,655.92-1,772.55

Finding the Fourth Proportional to 5,105.16, 7,655.92 and 1,772.55

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Solution

The fourth proportional to 5,105.16, 7,655.92 and 1,772.55 is: 2,658.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.16 : 7,655.92 = 1,772.55 : x
  2. Step 2: Convert to fraction form
    5,105.16/7,655.92 = 1,772.55/x
  3. Step 3: Cross multiply
    5,105.16x = 7,655.92 × 1,772.55
  4. Step 4: Simplify right side
    5,105.16x = 13,570,496.56
  5. Step 5: Solve for x
    x = 13,570,496.56/5,105.16
  6. Step 6: Final answer
    x = 2,658.19

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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.