Home / 2,279.92-3,421.50-981.76

Finding the Fourth Proportional to 2,279.92, 3,421.50 and 981.76

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Solution

The fourth proportional to 2,279.92, 3,421.50 and 981.76 is: 1,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.92 : 3,421.50 = 981.76 : x
  2. Step 2: Convert to fraction form
    2,279.92/3,421.50 = 981.76/x
  3. Step 3: Cross multiply
    2,279.92x = 3,421.50 × 981.76
  4. Step 4: Simplify right side
    2,279.92x = 3,359,091.84
  5. Step 5: Solve for x
    x = 3,359,091.84/2,279.92
  6. Step 6: Final answer
    x = 1,473.34

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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.