Home / 3,549.41-5,320.67-1,990.16

Finding the Fourth Proportional to 3,549.41, 5,320.67 and 1,990.16

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Solution

The fourth proportional to 3,549.41, 5,320.67 and 1,990.16 is: 2,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.41 : 5,320.67 = 1,990.16 : x
  2. Step 2: Convert to fraction form
    3,549.41/5,320.67 = 1,990.16/x
  3. Step 3: Cross multiply
    3,549.41x = 5,320.67 × 1,990.16
  4. Step 4: Simplify right side
    3,549.41x = 10,588,948.05
  5. Step 5: Solve for x
    x = 10,588,948.05/3,549.41
  6. Step 6: Final answer
    x = 2,983.30

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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.