Home / 2,767.30-4,151.40-918.19

Finding the Fourth Proportional to 2,767.30, 4,151.40 and 918.19

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Solution

The fourth proportional to 2,767.30, 4,151.40 and 918.19 is: 1,377.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.30 : 4,151.40 = 918.19 : x
  2. Step 2: Convert to fraction form
    2,767.30/4,151.40 = 918.19/x
  3. Step 3: Cross multiply
    2,767.30x = 4,151.40 × 918.19
  4. Step 4: Simplify right side
    2,767.30x = 3,811,773.97
  5. Step 5: Solve for x
    x = 3,811,773.97/2,767.30
  6. Step 6: Final answer
    x = 1,377.43

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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.