Home / 1,418.13-2,127.23-800.30

Finding the Fourth Proportional to 1,418.13, 2,127.23 and 800.30

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Solution

The fourth proportional to 1,418.13, 2,127.23 and 800.30 is: 1,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.13 : 2,127.23 = 800.30 : x
  2. Step 2: Convert to fraction form
    1,418.13/2,127.23 = 800.30/x
  3. Step 3: Cross multiply
    1,418.13x = 2,127.23 × 800.30
  4. Step 4: Simplify right side
    1,418.13x = 1,702,422.17
  5. Step 5: Solve for x
    x = 1,702,422.17/1,418.13
  6. Step 6: Final answer
    x = 1,200.47

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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.