Home / 5,501.97-8,251.29-1,991.55

Finding the Fourth Proportional to 5,501.97, 8,251.29 and 1,991.55

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Solution

The fourth proportional to 5,501.97, 8,251.29 and 1,991.55 is: 2,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,501.97 : 8,251.29 = 1,991.55 : x
  2. Step 2: Convert to fraction form
    5,501.97/8,251.29 = 1,991.55/x
  3. Step 3: Cross multiply
    5,501.97x = 8,251.29 × 1,991.55
  4. Step 4: Simplify right side
    5,501.97x = 16,432,856.60
  5. Step 5: Solve for x
    x = 16,432,856.60/5,501.97
  6. Step 6: Final answer
    x = 2,986.72

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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.