Home / 2,073.61-2,861.75-1,189.70

Finding the Fourth Proportional to 2,073.61, 2,861.75 and 1,189.70

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Solution

The fourth proportional to 2,073.61, 2,861.75 and 1,189.70 is: 1,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.61 : 2,861.75 = 1,189.70 : x
  2. Step 2: Convert to fraction form
    2,073.61/2,861.75 = 1,189.70/x
  3. Step 3: Cross multiply
    2,073.61x = 2,861.75 × 1,189.70
  4. Step 4: Simplify right side
    2,073.61x = 3,404,612.64
  5. Step 5: Solve for x
    x = 3,404,612.64/2,073.61
  6. Step 6: Final answer
    x = 1,641.88

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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.