Home / 3,378.88-5,073.28-2,085.76

Finding the Fourth Proportional to 3,378.88, 5,073.28 and 2,085.76

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Solution

The fourth proportional to 3,378.88, 5,073.28 and 2,085.76 is: 3,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.88 : 5,073.28 = 2,085.76 : x
  2. Step 2: Convert to fraction form
    3,378.88/5,073.28 = 2,085.76/x
  3. Step 3: Cross multiply
    3,378.88x = 5,073.28 × 2,085.76
  4. Step 4: Simplify right side
    3,378.88x = 10,581,644.49
  5. Step 5: Solve for x
    x = 10,581,644.49/3,378.88
  6. Step 6: Final answer
    x = 3,131.70

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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.