Home / 7,885.20-11,817.28-2,949.84

Finding the Fourth Proportional to 7,885.20, 11,817.28 and 2,949.84

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Solution

The fourth proportional to 7,885.20, 11,817.28 and 2,949.84 is: 4,420.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.20 : 11,817.28 = 2,949.84 : x
  2. Step 2: Convert to fraction form
    7,885.20/11,817.28 = 2,949.84/x
  3. Step 3: Cross multiply
    7,885.20x = 11,817.28 × 2,949.84
  4. Step 4: Simplify right side
    7,885.20x = 34,859,085.24
  5. Step 5: Solve for x
    x = 34,859,085.24/7,885.20
  6. Step 6: Final answer
    x = 4,420.82

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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.