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Finding the Fourth Proportional to 2,766.68, 4,129.78 and 2,438.63

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Solution

The fourth proportional to 2,766.68, 4,129.78 and 2,438.63 is: 3,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.68 : 4,129.78 = 2,438.63 : x
  2. Step 2: Convert to fraction form
    2,766.68/4,129.78 = 2,438.63/x
  3. Step 3: Cross multiply
    2,766.68x = 4,129.78 × 2,438.63
  4. Step 4: Simplify right side
    2,766.68x = 10,071,005.40
  5. Step 5: Solve for x
    x = 10,071,005.40/2,766.68
  6. Step 6: Final answer
    x = 3,640.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.