Home / 2,755.30-4,129.56-1,877.80

Finding the Fourth Proportional to 2,755.30, 4,129.56 and 1,877.80

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Solution

The fourth proportional to 2,755.30, 4,129.56 and 1,877.80 is: 2,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.30 : 4,129.56 = 1,877.80 : x
  2. Step 2: Convert to fraction form
    2,755.30/4,129.56 = 1,877.80/x
  3. Step 3: Cross multiply
    2,755.30x = 4,129.56 × 1,877.80
  4. Step 4: Simplify right side
    2,755.30x = 7,754,487.77
  5. Step 5: Solve for x
    x = 7,754,487.77/2,755.30
  6. Step 6: Final answer
    x = 2,814.39

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1.5x scale

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.