Home / 3,077.79-4,247.46-2,133.78

Finding the Fourth Proportional to 3,077.79, 4,247.46 and 2,133.78

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Solution

The fourth proportional to 3,077.79, 4,247.46 and 2,133.78 is: 2,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.79 : 4,247.46 = 2,133.78 : x
  2. Step 2: Convert to fraction form
    3,077.79/4,247.46 = 2,133.78/x
  3. Step 3: Cross multiply
    3,077.79x = 4,247.46 × 2,133.78
  4. Step 4: Simplify right side
    3,077.79x = 9,063,145.20
  5. Step 5: Solve for x
    x = 9,063,145.20/3,077.79
  6. Step 6: Final answer
    x = 2,944.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.