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Finding the Fourth Proportional to 2,299.52, 3,449.40 and 912.72

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Solution

The fourth proportional to 2,299.52, 3,449.40 and 912.72 is: 1,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.52 : 3,449.40 = 912.72 : x
  2. Step 2: Convert to fraction form
    2,299.52/3,449.40 = 912.72/x
  3. Step 3: Cross multiply
    2,299.52x = 3,449.40 × 912.72
  4. Step 4: Simplify right side
    2,299.52x = 3,148,336.37
  5. Step 5: Solve for x
    x = 3,148,336.37/2,299.52
  6. Step 6: Final answer
    x = 1,369.13

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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.