Home / 3,109.79-4,292.42-1,851.73

Finding the Fourth Proportional to 3,109.79, 4,292.42 and 1,851.73

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Solution

The fourth proportional to 3,109.79, 4,292.42 and 1,851.73 is: 2,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.79 : 4,292.42 = 1,851.73 : x
  2. Step 2: Convert to fraction form
    3,109.79/4,292.42 = 1,851.73/x
  3. Step 3: Cross multiply
    3,109.79x = 4,292.42 × 1,851.73
  4. Step 4: Simplify right side
    3,109.79x = 7,948,382.90
  5. Step 5: Solve for x
    x = 7,948,382.90/3,109.79
  6. Step 6: Final answer
    x = 2,555.92

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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.