Home / 1,861.22-2,569.02-1,490.78

Finding the Fourth Proportional to 1,861.22, 2,569.02 and 1,490.78

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Solution

The fourth proportional to 1,861.22, 2,569.02 and 1,490.78 is: 2,057.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.22 : 2,569.02 = 1,490.78 : x
  2. Step 2: Convert to fraction form
    1,861.22/2,569.02 = 1,490.78/x
  3. Step 3: Cross multiply
    1,861.22x = 2,569.02 × 1,490.78
  4. Step 4: Simplify right side
    1,861.22x = 3,829,843.64
  5. Step 5: Solve for x
    x = 3,829,843.64/1,861.22
  6. Step 6: Final answer
    x = 2,057.71

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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.