Home / 2,693.28-4,042.32-1,720.20

Finding the Fourth Proportional to 2,693.28, 4,042.32 and 1,720.20

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Solution

The fourth proportional to 2,693.28, 4,042.32 and 1,720.20 is: 2,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.28 : 4,042.32 = 1,720.20 : x
  2. Step 2: Convert to fraction form
    2,693.28/4,042.32 = 1,720.20/x
  3. Step 3: Cross multiply
    2,693.28x = 4,042.32 × 1,720.20
  4. Step 4: Simplify right side
    2,693.28x = 6,953,598.86
  5. Step 5: Solve for x
    x = 6,953,598.86/2,693.28
  6. Step 6: Final answer
    x = 2,581.83

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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.