Home / 3,179.15-4,386.98-1,781.63

Finding the Fourth Proportional to 3,179.15, 4,386.98 and 1,781.63

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Solution

The fourth proportional to 3,179.15, 4,386.98 and 1,781.63 is: 2,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.15 : 4,386.98 = 1,781.63 : x
  2. Step 2: Convert to fraction form
    3,179.15/4,386.98 = 1,781.63/x
  3. Step 3: Cross multiply
    3,179.15x = 4,386.98 × 1,781.63
  4. Step 4: Simplify right side
    3,179.15x = 7,815,957.70
  5. Step 5: Solve for x
    x = 7,815,957.70/3,179.15
  6. Step 6: Final answer
    x = 2,458.51

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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.