Home / 7,856.34-11,789.10-2,929.38

Finding the Fourth Proportional to 7,856.34, 11,789.10 and 2,929.38

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Solution

The fourth proportional to 7,856.34, 11,789.10 and 2,929.38 is: 4,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.34 : 11,789.10 = 2,929.38 : x
  2. Step 2: Convert to fraction form
    7,856.34/11,789.10 = 2,929.38/x
  3. Step 3: Cross multiply
    7,856.34x = 11,789.10 × 2,929.38
  4. Step 4: Simplify right side
    7,856.34x = 34,534,753.76
  5. Step 5: Solve for x
    x = 34,534,753.76/7,856.34
  6. Step 6: Final answer
    x = 4,395.78

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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.