Home / 2,719.04-4,078.01-1,331.78

Finding the Fourth Proportional to 2,719.04, 4,078.01 and 1,331.78

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Solution

The fourth proportional to 2,719.04, 4,078.01 and 1,331.78 is: 1,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.04 : 4,078.01 = 1,331.78 : x
  2. Step 2: Convert to fraction form
    2,719.04/4,078.01 = 1,331.78/x
  3. Step 3: Cross multiply
    2,719.04x = 4,078.01 × 1,331.78
  4. Step 4: Simplify right side
    2,719.04x = 5,430,995.10
  5. Step 5: Solve for x
    x = 5,430,995.10/2,719.04
  6. Step 6: Final answer
    x = 1,997.40

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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.