Home / 7,921.75-10,932.02-4,778.23

Finding the Fourth Proportional to 7,921.75, 10,932.02 and 4,778.23

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Solution

The fourth proportional to 7,921.75, 10,932.02 and 4,778.23 is: 6,593.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.75 : 10,932.02 = 4,778.23 : x
  2. Step 2: Convert to fraction form
    7,921.75/10,932.02 = 4,778.23/x
  3. Step 3: Cross multiply
    7,921.75x = 10,932.02 × 4,778.23
  4. Step 4: Simplify right side
    7,921.75x = 52,235,705.92
  5. Step 5: Solve for x
    x = 52,235,705.92/7,921.75
  6. Step 6: Final answer
    x = 6,593.96

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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.