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Finding the Fourth Proportional to 2,553.32, 3,829.50 and 909.92

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Solution

The fourth proportional to 2,553.32, 3,829.50 and 909.92 is: 1,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,553.32 : 3,829.50 = 909.92 : x
  2. Step 2: Convert to fraction form
    2,553.32/3,829.50 = 909.92/x
  3. Step 3: Cross multiply
    2,553.32x = 3,829.50 × 909.92
  4. Step 4: Simplify right side
    2,553.32x = 3,484,519.49
  5. Step 5: Solve for x
    x = 3,484,519.49/2,553.32
  6. Step 6: Final answer
    x = 1,364.70

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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.