Home / 2,767.51-4,151.40-918.55

Finding the Fourth Proportional to 2,767.51, 4,151.40 and 918.55

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Solution

The fourth proportional to 2,767.51, 4,151.40 and 918.55 is: 1,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.51 : 4,151.40 = 918.55 : x
  2. Step 2: Convert to fraction form
    2,767.51/4,151.40 = 918.55/x
  3. Step 3: Cross multiply
    2,767.51x = 4,151.40 × 918.55
  4. Step 4: Simplify right side
    2,767.51x = 3,813,268.47
  5. Step 5: Solve for x
    x = 3,813,268.47/2,767.51
  6. Step 6: Final answer
    x = 1,377.87

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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.