Home / 7,125.72-9,833.52-3,981.96

Finding the Fourth Proportional to 7,125.72, 9,833.52 and 3,981.96

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Solution

The fourth proportional to 7,125.72, 9,833.52 and 3,981.96 is: 5,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.72 : 9,833.52 = 3,981.96 : x
  2. Step 2: Convert to fraction form
    7,125.72/9,833.52 = 3,981.96/x
  3. Step 3: Cross multiply
    7,125.72x = 9,833.52 × 3,981.96
  4. Step 4: Simplify right side
    7,125.72x = 39,156,683.30
  5. Step 5: Solve for x
    x = 39,156,683.30/7,125.72
  6. Step 6: Final answer
    x = 5,495.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.