Home / 5,278.56-7,914.20-2,315.58

Finding the Fourth Proportional to 5,278.56, 7,914.20 and 2,315.58

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Solution

The fourth proportional to 5,278.56, 7,914.20 and 2,315.58 is: 3,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.56 : 7,914.20 = 2,315.58 : x
  2. Step 2: Convert to fraction form
    5,278.56/7,914.20 = 2,315.58/x
  3. Step 3: Cross multiply
    5,278.56x = 7,914.20 × 2,315.58
  4. Step 4: Simplify right side
    5,278.56x = 18,325,951.66
  5. Step 5: Solve for x
    x = 18,325,951.66/5,278.56
  6. Step 6: Final answer
    x = 3,471.77

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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.