Home / 1,718.28-2,575.40-742.32

Finding the Fourth Proportional to 1,718.28, 2,575.40 and 742.32

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Solution

The fourth proportional to 1,718.28, 2,575.40 and 742.32 is: 1,112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.28 : 2,575.40 = 742.32 : x
  2. Step 2: Convert to fraction form
    1,718.28/2,575.40 = 742.32/x
  3. Step 3: Cross multiply
    1,718.28x = 2,575.40 × 742.32
  4. Step 4: Simplify right side
    1,718.28x = 1,911,767.22
  5. Step 5: Solve for x
    x = 1,911,767.22/1,718.28
  6. Step 6: Final answer
    x = 1,112.61

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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.