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Finding the Fourth Proportional to 2,916.88, 4,026.80 and 2,268.68

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Solution

The fourth proportional to 2,916.88, 4,026.80 and 2,268.68 is: 3,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.88 : 4,026.80 = 2,268.68 : x
  2. Step 2: Convert to fraction form
    2,916.88/4,026.80 = 2,268.68/x
  3. Step 3: Cross multiply
    2,916.88x = 4,026.80 × 2,268.68
  4. Step 4: Simplify right side
    2,916.88x = 9,135,520.62
  5. Step 5: Solve for x
    x = 9,135,520.62/2,916.88
  6. Step 6: Final answer
    x = 3,131.95

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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.