Home / 1,720.32-2,579.40-1,142.52

Finding the Fourth Proportional to 1,720.32, 2,579.40 and 1,142.52

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Solution

The fourth proportional to 1,720.32, 2,579.40 and 1,142.52 is: 1,713.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.32 : 2,579.40 = 1,142.52 : x
  2. Step 2: Convert to fraction form
    1,720.32/2,579.40 = 1,142.52/x
  3. Step 3: Cross multiply
    1,720.32x = 2,579.40 × 1,142.52
  4. Step 4: Simplify right side
    1,720.32x = 2,947,016.09
  5. Step 5: Solve for x
    x = 2,947,016.09/1,720.32
  6. Step 6: Final answer
    x = 1,713.06

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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.