Home / 3,179.48-4,387.86-1,853.11

Finding the Fourth Proportional to 3,179.48, 4,387.86 and 1,853.11

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Solution

The fourth proportional to 3,179.48, 4,387.86 and 1,853.11 is: 2,557.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.48 : 4,387.86 = 1,853.11 : x
  2. Step 2: Convert to fraction form
    3,179.48/4,387.86 = 1,853.11/x
  3. Step 3: Cross multiply
    3,179.48x = 4,387.86 × 1,853.11
  4. Step 4: Simplify right side
    3,179.48x = 8,131,156.04
  5. Step 5: Solve for x
    x = 8,131,156.04/3,179.48
  6. Step 6: Final answer
    x = 2,557.39

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1.5x scale

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.