Home / 4,981.20-7,472.70-2,509.80

Finding the Fourth Proportional to 4,981.20, 7,472.70 and 2,509.80

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Solution

The fourth proportional to 4,981.20, 7,472.70 and 2,509.80 is: 3,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.20 : 7,472.70 = 2,509.80 : x
  2. Step 2: Convert to fraction form
    4,981.20/7,472.70 = 2,509.80/x
  3. Step 3: Cross multiply
    4,981.20x = 7,472.70 × 2,509.80
  4. Step 4: Simplify right side
    4,981.20x = 18,754,982.46
  5. Step 5: Solve for x
    x = 18,754,982.46/4,981.20
  6. Step 6: Final answer
    x = 3,765.15

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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.