Home / 1,877.60-2,591.28-1,131.80

Finding the Fourth Proportional to 1,877.60, 2,591.28 and 1,131.80

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Solution

The fourth proportional to 1,877.60, 2,591.28 and 1,131.80 is: 1,562.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.60 : 2,591.28 = 1,131.80 : x
  2. Step 2: Convert to fraction form
    1,877.60/2,591.28 = 1,131.80/x
  3. Step 3: Cross multiply
    1,877.60x = 2,591.28 × 1,131.80
  4. Step 4: Simplify right side
    1,877.60x = 2,932,810.70
  5. Step 5: Solve for x
    x = 2,932,810.70/1,877.60
  6. Step 6: Final answer
    x = 1,562.00

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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.