Home / 1,789.85-2,681.17-1,138.25

Finding the Fourth Proportional to 1,789.85, 2,681.17 and 1,138.25

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Solution

The fourth proportional to 1,789.85, 2,681.17 and 1,138.25 is: 1,705.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.85 : 2,681.17 = 1,138.25 : x
  2. Step 2: Convert to fraction form
    1,789.85/2,681.17 = 1,138.25/x
  3. Step 3: Cross multiply
    1,789.85x = 2,681.17 × 1,138.25
  4. Step 4: Simplify right side
    1,789.85x = 3,051,841.75
  5. Step 5: Solve for x
    x = 3,051,841.75/1,789.85
  6. Step 6: Final answer
    x = 1,705.08

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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.