Home / 3,549.31-5,321.61-1,989.46

Finding the Fourth Proportional to 3,549.31, 5,321.61 and 1,989.46

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Solution

The fourth proportional to 3,549.31, 5,321.61 and 1,989.46 is: 2,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.31 : 5,321.61 = 1,989.46 : x
  2. Step 2: Convert to fraction form
    3,549.31/5,321.61 = 1,989.46/x
  3. Step 3: Cross multiply
    3,549.31x = 5,321.61 × 1,989.46
  4. Step 4: Simplify right side
    3,549.31x = 10,587,130.23
  5. Step 5: Solve for x
    x = 10,587,130.23/3,549.31
  6. Step 6: Final answer
    x = 2,982.87

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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.