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Finding the Fourth Proportional to 2,152.92, 3,229.26 and 693.12

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Solution

The fourth proportional to 2,152.92, 3,229.26 and 693.12 is: 1,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.92 : 3,229.26 = 693.12 : x
  2. Step 2: Convert to fraction form
    2,152.92/3,229.26 = 693.12/x
  3. Step 3: Cross multiply
    2,152.92x = 3,229.26 × 693.12
  4. Step 4: Simplify right side
    2,152.92x = 2,238,264.69
  5. Step 5: Solve for x
    x = 2,238,264.69/2,152.92
  6. Step 6: Final answer
    x = 1,039.64

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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.