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Finding the Fourth Proportional to 2,316.12, 3,474.18 and 672.68

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Solution

The fourth proportional to 2,316.12, 3,474.18 and 672.68 is: 1,009.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.12 : 3,474.18 = 672.68 : x
  2. Step 2: Convert to fraction form
    2,316.12/3,474.18 = 672.68/x
  3. Step 3: Cross multiply
    2,316.12x = 3,474.18 × 672.68
  4. Step 4: Simplify right side
    2,316.12x = 2,337,011.40
  5. Step 5: Solve for x
    x = 2,337,011.40/2,316.12
  6. Step 6: Final answer
    x = 1,009.02

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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.