Home / 3,251.02-4,486.15-1,991.56

Finding the Fourth Proportional to 3,251.02, 4,486.15 and 1,991.56

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Solution

The fourth proportional to 3,251.02, 4,486.15 and 1,991.56 is: 2,748.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.02 : 4,486.15 = 1,991.56 : x
  2. Step 2: Convert to fraction form
    3,251.02/4,486.15 = 1,991.56/x
  3. Step 3: Cross multiply
    3,251.02x = 4,486.15 × 1,991.56
  4. Step 4: Simplify right side
    3,251.02x = 8,934,436.89
  5. Step 5: Solve for x
    x = 8,934,436.89/3,251.02
  6. Step 6: Final answer
    x = 2,748.19

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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.