Home / 7,680.13-11,521.55-3,177.17

Finding the Fourth Proportional to 7,680.13, 11,521.55 and 3,177.17

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Solution

The fourth proportional to 7,680.13, 11,521.55 and 3,177.17 is: 4,766.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.13 : 11,521.55 = 3,177.17 : x
  2. Step 2: Convert to fraction form
    7,680.13/11,521.55 = 3,177.17/x
  3. Step 3: Cross multiply
    7,680.13x = 11,521.55 × 3,177.17
  4. Step 4: Simplify right side
    7,680.13x = 36,605,947.85
  5. Step 5: Solve for x
    x = 36,605,947.85/7,680.13
  6. Step 6: Final answer
    x = 4,766.32

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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.