Home / 4,981.50-7,472.28-1,518.78

Finding the Fourth Proportional to 4,981.50, 7,472.28 and 1,518.78

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Solution

The fourth proportional to 4,981.50, 7,472.28 and 1,518.78 is: 2,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.50 : 7,472.28 = 1,518.78 : x
  2. Step 2: Convert to fraction form
    4,981.50/7,472.28 = 1,518.78/x
  3. Step 3: Cross multiply
    4,981.50x = 7,472.28 × 1,518.78
  4. Step 4: Simplify right side
    4,981.50x = 11,348,749.42
  5. Step 5: Solve for x
    x = 11,348,749.42/4,981.50
  6. Step 6: Final answer
    x = 2,278.18

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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.