Home / 5,149.12-7,724-4,886.72

Finding the Fourth Proportional to 5,149.12, 7,724 and 4,886.72

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Solution

The fourth proportional to 5,149.12, 7,724 and 4,886.72 is: 7,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.12 : 7,724 = 4,886.72 : x
  2. Step 2: Convert to fraction form
    5,149.12/7,724 = 4,886.72/x
  3. Step 3: Cross multiply
    5,149.12x = 7,724 × 4,886.72
  4. Step 4: Simplify right side
    5,149.12x = 37,745,025.28
  5. Step 5: Solve for x
    x = 37,745,025.28/5,149.12
  6. Step 6: Final answer
    x = 7,330.38

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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.