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Finding the Fourth Proportional to 3,246.74, 4,478.05 and 2,799.38

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Solution

The fourth proportional to 3,246.74, 4,478.05 and 2,799.38 is: 3,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.74 : 4,478.05 = 2,799.38 : x
  2. Step 2: Convert to fraction form
    3,246.74/4,478.05 = 2,799.38/x
  3. Step 3: Cross multiply
    3,246.74x = 4,478.05 × 2,799.38
  4. Step 4: Simplify right side
    3,246.74x = 12,535,763.61
  5. Step 5: Solve for x
    x = 12,535,763.61/3,246.74
  6. Step 6: Final answer
    x = 3,861.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.