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Finding the Fourth Proportional to 2,315.88, 3,474.45 and 672.57

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Solution

The fourth proportional to 2,315.88, 3,474.45 and 672.57 is: 1,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.88 : 3,474.45 = 672.57 : x
  2. Step 2: Convert to fraction form
    2,315.88/3,474.45 = 672.57/x
  3. Step 3: Cross multiply
    2,315.88x = 3,474.45 × 672.57
  4. Step 4: Simplify right side
    2,315.88x = 2,336,810.84
  5. Step 5: Solve for x
    x = 2,336,810.84/2,315.88
  6. Step 6: Final answer
    x = 1,009.04

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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.