Home / 3,177.72-4,385.27-1,780.47

Finding the Fourth Proportional to 3,177.72, 4,385.27 and 1,780.47

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Solution

The fourth proportional to 3,177.72, 4,385.27 and 1,780.47 is: 2,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.72 : 4,385.27 = 1,780.47 : x
  2. Step 2: Convert to fraction form
    3,177.72/4,385.27 = 1,780.47/x
  3. Step 3: Cross multiply
    3,177.72x = 4,385.27 × 1,780.47
  4. Step 4: Simplify right side
    3,177.72x = 7,807,841.68
  5. Step 5: Solve for x
    x = 7,807,841.68/3,177.72
  6. Step 6: Final answer
    x = 2,457.06

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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.