Home / 1,717.16-2,575.28-621.32

Finding the Fourth Proportional to 1,717.16, 2,575.28 and 621.32

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Solution

The fourth proportional to 1,717.16, 2,575.28 and 621.32 is: 931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.16 : 2,575.28 = 621.32 : x
  2. Step 2: Convert to fraction form
    1,717.16/2,575.28 = 621.32/x
  3. Step 3: Cross multiply
    1,717.16x = 2,575.28 × 621.32
  4. Step 4: Simplify right side
    1,717.16x = 1,600,072.97
  5. Step 5: Solve for x
    x = 1,600,072.97/1,717.16
  6. Step 6: Final answer
    x = 931.81

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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.