Home / 2,899.38-4,001.20-1,720.56

Finding the Fourth Proportional to 2,899.38, 4,001.20 and 1,720.56

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Solution

The fourth proportional to 2,899.38, 4,001.20 and 1,720.56 is: 2,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.38 : 4,001.20 = 1,720.56 : x
  2. Step 2: Convert to fraction form
    2,899.38/4,001.20 = 1,720.56/x
  3. Step 3: Cross multiply
    2,899.38x = 4,001.20 × 1,720.56
  4. Step 4: Simplify right side
    2,899.38x = 6,884,304.67
  5. Step 5: Solve for x
    x = 6,884,304.67/2,899.38
  6. Step 6: Final answer
    x = 2,374.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.