Home / 3,123.75-4,686.50-932.56

Finding the Fourth Proportional to 3,123.75, 4,686.50 and 932.56

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Solution

The fourth proportional to 3,123.75, 4,686.50 and 932.56 is: 1,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.75 : 4,686.50 = 932.56 : x
  2. Step 2: Convert to fraction form
    3,123.75/4,686.50 = 932.56/x
  3. Step 3: Cross multiply
    3,123.75x = 4,686.50 × 932.56
  4. Step 4: Simplify right side
    3,123.75x = 4,370,442.44
  5. Step 5: Solve for x
    x = 4,370,442.44/3,123.75
  6. Step 6: Final answer
    x = 1,399.10

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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.