Home / 1,717.68-2,576.40-621.84

Finding the Fourth Proportional to 1,717.68, 2,576.40 and 621.84

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Solution

The fourth proportional to 1,717.68, 2,576.40 and 621.84 is: 932.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.68 : 2,576.40 = 621.84 : x
  2. Step 2: Convert to fraction form
    1,717.68/2,576.40 = 621.84/x
  3. Step 3: Cross multiply
    1,717.68x = 2,576.40 × 621.84
  4. Step 4: Simplify right side
    1,717.68x = 1,602,108.58
  5. Step 5: Solve for x
    x = 1,602,108.58/1,717.68
  6. Step 6: Final answer
    x = 932.72

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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.