Home / 2,766.84-4,151.21-918.15

Finding the Fourth Proportional to 2,766.84, 4,151.21 and 918.15

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Solution

The fourth proportional to 2,766.84, 4,151.21 and 918.15 is: 1,377.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.84 : 4,151.21 = 918.15 : x
  2. Step 2: Convert to fraction form
    2,766.84/4,151.21 = 918.15/x
  3. Step 3: Cross multiply
    2,766.84x = 4,151.21 × 918.15
  4. Step 4: Simplify right side
    2,766.84x = 3,811,428.87
  5. Step 5: Solve for x
    x = 3,811,428.87/2,766.84
  6. Step 6: Final answer
    x = 1,377.54

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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.