Home / 1,418.64-2,129.76-1,360.32

Finding the Fourth Proportional to 1,418.64, 2,129.76 and 1,360.32

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Solution

The fourth proportional to 1,418.64, 2,129.76 and 1,360.32 is: 2,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.64 : 2,129.76 = 1,360.32 : x
  2. Step 2: Convert to fraction form
    1,418.64/2,129.76 = 1,360.32/x
  3. Step 3: Cross multiply
    1,418.64x = 2,129.76 × 1,360.32
  4. Step 4: Simplify right side
    1,418.64x = 2,897,155.12
  5. Step 5: Solve for x
    x = 2,897,155.12/1,418.64
  6. Step 6: Final answer
    x = 2,042.21

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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.