Home / 2,669.27-4,002.58-913.78

Finding the Fourth Proportional to 2,669.27, 4,002.58 and 913.78

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Solution

The fourth proportional to 2,669.27, 4,002.58 and 913.78 is: 1,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.27 : 4,002.58 = 913.78 : x
  2. Step 2: Convert to fraction form
    2,669.27/4,002.58 = 913.78/x
  3. Step 3: Cross multiply
    2,669.27x = 4,002.58 × 913.78
  4. Step 4: Simplify right side
    2,669.27x = 3,657,452.97
  5. Step 5: Solve for x
    x = 3,657,452.97/2,669.27
  6. Step 6: Final answer
    x = 1,370.21

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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.