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Finding the Fourth Proportional to 2,452.68, 3,679.47 and 809.69

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Solution

The fourth proportional to 2,452.68, 3,679.47 and 809.69 is: 1,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.68 : 3,679.47 = 809.69 : x
  2. Step 2: Convert to fraction form
    2,452.68/3,679.47 = 809.69/x
  3. Step 3: Cross multiply
    2,452.68x = 3,679.47 × 809.69
  4. Step 4: Simplify right side
    2,452.68x = 2,979,211.67
  5. Step 5: Solve for x
    x = 2,979,211.67/2,452.68
  6. Step 6: Final answer
    x = 1,214.68

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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.