Home / 5,103.20-7,651.96-1,981.26

Finding the Fourth Proportional to 5,103.20, 7,651.96 and 1,981.26

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Solution

The fourth proportional to 5,103.20, 7,651.96 and 1,981.26 is: 2,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.20 : 7,651.96 = 1,981.26 : x
  2. Step 2: Convert to fraction form
    5,103.20/7,651.96 = 1,981.26/x
  3. Step 3: Cross multiply
    5,103.20x = 7,651.96 × 1,981.26
  4. Step 4: Simplify right side
    5,103.20x = 15,160,484.01
  5. Step 5: Solve for x
    x = 15,160,484.01/5,103.20
  6. Step 6: Final answer
    x = 2,970.78

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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.