Home / 7,938.78-11,909.38-2,095.86

Finding the Fourth Proportional to 7,938.78, 11,909.38 and 2,095.86

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Solution

The fourth proportional to 7,938.78, 11,909.38 and 2,095.86 is: 3,144.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.78 : 11,909.38 = 2,095.86 : x
  2. Step 2: Convert to fraction form
    7,938.78/11,909.38 = 2,095.86/x
  3. Step 3: Cross multiply
    7,938.78x = 11,909.38 × 2,095.86
  4. Step 4: Simplify right side
    7,938.78x = 24,960,393.17
  5. Step 5: Solve for x
    x = 24,960,393.17/7,938.78
  6. Step 6: Final answer
    x = 3,144.11

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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.