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Finding the Fourth Proportional to 2,314.64, 3,472.12 and 1,340.40

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Solution

The fourth proportional to 2,314.64, 3,472.12 and 1,340.40 is: 2,010.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,314.64 : 3,472.12 = 1,340.40 : x
  2. Step 2: Convert to fraction form
    2,314.64/3,472.12 = 1,340.40/x
  3. Step 3: Cross multiply
    2,314.64x = 3,472.12 × 1,340.40
  4. Step 4: Simplify right side
    2,314.64x = 4,654,029.65
  5. Step 5: Solve for x
    x = 4,654,029.65/2,314.64
  6. Step 6: Final answer
    x = 2,010.69

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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.