Home / 3,386.28-5,079.36-1,077.78

Finding the Fourth Proportional to 3,386.28, 5,079.36 and 1,077.78

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Solution

The fourth proportional to 3,386.28, 5,079.36 and 1,077.78 is: 1,616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.28 : 5,079.36 = 1,077.78 : x
  2. Step 2: Convert to fraction form
    3,386.28/5,079.36 = 1,077.78/x
  3. Step 3: Cross multiply
    3,386.28x = 5,079.36 × 1,077.78
  4. Step 4: Simplify right side
    3,386.28x = 5,474,432.62
  5. Step 5: Solve for x
    x = 5,474,432.62/3,386.28
  6. Step 6: Final answer
    x = 1,616.65

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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.