Home / 1,419.20-2,127.92-552.50

Finding the Fourth Proportional to 1,419.20, 2,127.92 and 552.50

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Solution

The fourth proportional to 1,419.20, 2,127.92 and 552.50 is: 828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.20 : 2,127.92 = 552.50 : x
  2. Step 2: Convert to fraction form
    1,419.20/2,127.92 = 552.50/x
  3. Step 3: Cross multiply
    1,419.20x = 2,127.92 × 552.50
  4. Step 4: Simplify right side
    1,419.20x = 1,175,675.80
  5. Step 5: Solve for x
    x = 1,175,675.80/1,419.20
  6. Step 6: Final answer
    x = 828.41

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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.