Home / 2,078.81-3,115.51-844.78

Finding the Fourth Proportional to 2,078.81, 3,115.51 and 844.78

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Solution

The fourth proportional to 2,078.81, 3,115.51 and 844.78 is: 1,266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.81 : 3,115.51 = 844.78 : x
  2. Step 2: Convert to fraction form
    2,078.81/3,115.51 = 844.78/x
  3. Step 3: Cross multiply
    2,078.81x = 3,115.51 × 844.78
  4. Step 4: Simplify right side
    2,078.81x = 2,631,900.74
  5. Step 5: Solve for x
    x = 2,631,900.74/2,078.81
  6. Step 6: Final answer
    x = 1,266.06

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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.