Home / 3,621.80-5,432.70-2,061.20

Finding the Fourth Proportional to 3,621.80, 5,432.70 and 2,061.20

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Solution

The fourth proportional to 3,621.80, 5,432.70 and 2,061.20 is: 3,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.80 : 5,432.70 = 2,061.20 : x
  2. Step 2: Convert to fraction form
    3,621.80/5,432.70 = 2,061.20/x
  3. Step 3: Cross multiply
    3,621.80x = 5,432.70 × 2,061.20
  4. Step 4: Simplify right side
    3,621.80x = 11,197,881.24
  5. Step 5: Solve for x
    x = 11,197,881.24/3,621.80
  6. Step 6: Final answer
    x = 3,091.80

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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.