Home / 3,812.42-5,719.80-1,621.10

Finding the Fourth Proportional to 3,812.42, 5,719.80 and 1,621.10

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Solution

The fourth proportional to 3,812.42, 5,719.80 and 1,621.10 is: 2,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.42 : 5,719.80 = 1,621.10 : x
  2. Step 2: Convert to fraction form
    3,812.42/5,719.80 = 1,621.10/x
  3. Step 3: Cross multiply
    3,812.42x = 5,719.80 × 1,621.10
  4. Step 4: Simplify right side
    3,812.42x = 9,272,367.78
  5. Step 5: Solve for x
    x = 9,272,367.78/3,812.42
  6. Step 6: Final answer
    x = 2,432.15

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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.