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Finding the Fourth Proportional to 2,699.97, 4,050.34 and 1,139

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Solution

The fourth proportional to 2,699.97, 4,050.34 and 1,139 is: 1,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.97 : 4,050.34 = 1,139 : x
  2. Step 2: Convert to fraction form
    2,699.97/4,050.34 = 1,139/x
  3. Step 3: Cross multiply
    2,699.97x = 4,050.34 × 1,139
  4. Step 4: Simplify right side
    2,699.97x = 4,613,337.26
  5. Step 5: Solve for x
    x = 4,613,337.26/2,699.97
  6. Step 6: Final answer
    x = 1,708.66

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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.