Home / 1,539.36-2,125.44-1,229.76

Finding the Fourth Proportional to 1,539.36, 2,125.44 and 1,229.76

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Solution

The fourth proportional to 1,539.36, 2,125.44 and 1,229.76 is: 1,697.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.36 : 2,125.44 = 1,229.76 : x
  2. Step 2: Convert to fraction form
    1,539.36/2,125.44 = 1,229.76/x
  3. Step 3: Cross multiply
    1,539.36x = 2,125.44 × 1,229.76
  4. Step 4: Simplify right side
    1,539.36x = 2,613,781.09
  5. Step 5: Solve for x
    x = 2,613,781.09/1,539.36
  6. Step 6: Final answer
    x = 1,697.97

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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.