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Finding the Fourth Proportional to 2,318.51, 3,478.28 and 674.92

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Solution

The fourth proportional to 2,318.51, 3,478.28 and 674.92 is: 1,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.51 : 3,478.28 = 674.92 : x
  2. Step 2: Convert to fraction form
    2,318.51/3,478.28 = 674.92/x
  3. Step 3: Cross multiply
    2,318.51x = 3,478.28 × 674.92
  4. Step 4: Simplify right side
    2,318.51x = 2,347,542.15
  5. Step 5: Solve for x
    x = 2,347,542.15/2,318.51
  6. Step 6: Final answer
    x = 1,012.52

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1.5x scale

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.