Home / 2,191.95-3,281.54-1,149.48

Finding the Fourth Proportional to 2,191.95, 3,281.54 and 1,149.48

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Solution

The fourth proportional to 2,191.95, 3,281.54 and 1,149.48 is: 1,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.95 : 3,281.54 = 1,149.48 : x
  2. Step 2: Convert to fraction form
    2,191.95/3,281.54 = 1,149.48/x
  3. Step 3: Cross multiply
    2,191.95x = 3,281.54 × 1,149.48
  4. Step 4: Simplify right side
    2,191.95x = 3,772,058.85
  5. Step 5: Solve for x
    x = 3,772,058.85/2,191.95
  6. Step 6: Final answer
    x = 1,720.87

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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.