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Finding the Fourth Proportional to 2,851.66, 4,278.39 and 903.85

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Solution

The fourth proportional to 2,851.66, 4,278.39 and 903.85 is: 1,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.66 : 4,278.39 = 903.85 : x
  2. Step 2: Convert to fraction form
    2,851.66/4,278.39 = 903.85/x
  3. Step 3: Cross multiply
    2,851.66x = 4,278.39 × 903.85
  4. Step 4: Simplify right side
    2,851.66x = 3,867,022.80
  5. Step 5: Solve for x
    x = 3,867,022.80/2,851.66
  6. Step 6: Final answer
    x = 1,356.06

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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.