Home / 1,442.20-1,991.10-1,092.28

Finding the Fourth Proportional to 1,442.20, 1,991.10 and 1,092.28

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Solution

The fourth proportional to 1,442.20, 1,991.10 and 1,092.28 is: 1,508.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.20 : 1,991.10 = 1,092.28 : x
  2. Step 2: Convert to fraction form
    1,442.20/1,991.10 = 1,092.28/x
  3. Step 3: Cross multiply
    1,442.20x = 1,991.10 × 1,092.28
  4. Step 4: Simplify right side
    1,442.20x = 2,174,838.71
  5. Step 5: Solve for x
    x = 2,174,838.71/1,442.20
  6. Step 6: Final answer
    x = 1,508.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.