Home / 5,230.80-7,851.72-3,155.88

Finding the Fourth Proportional to 5,230.80, 7,851.72 and 3,155.88

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Solution

The fourth proportional to 5,230.80, 7,851.72 and 3,155.88 is: 4,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.80 : 7,851.72 = 3,155.88 : x
  2. Step 2: Convert to fraction form
    5,230.80/7,851.72 = 3,155.88/x
  3. Step 3: Cross multiply
    5,230.80x = 7,851.72 × 3,155.88
  4. Step 4: Simplify right side
    5,230.80x = 24,779,086.11
  5. Step 5: Solve for x
    x = 24,779,086.11/5,230.80
  6. Step 6: Final answer
    x = 4,737.15

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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.