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Finding the Fourth Proportional to 2,315.84, 3,472.84 and 834.65

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Solution

The fourth proportional to 2,315.84, 3,472.84 and 834.65 is: 1,251.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.84 : 3,472.84 = 834.65 : x
  2. Step 2: Convert to fraction form
    2,315.84/3,472.84 = 834.65/x
  3. Step 3: Cross multiply
    2,315.84x = 3,472.84 × 834.65
  4. Step 4: Simplify right side
    2,315.84x = 2,898,586.46
  5. Step 5: Solve for x
    x = 2,898,586.46/2,315.84
  6. Step 6: Final answer
    x = 1,251.64

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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.