Home / 7,680.11-11,520.98-2,133.47

Finding the Fourth Proportional to 7,680.11, 11,520.98 and 2,133.47

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Solution

The fourth proportional to 7,680.11, 11,520.98 and 2,133.47 is: 3,200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.11 : 11,520.98 = 2,133.47 : x
  2. Step 2: Convert to fraction form
    7,680.11/11,520.98 = 2,133.47/x
  3. Step 3: Cross multiply
    7,680.11x = 11,520.98 × 2,133.47
  4. Step 4: Simplify right side
    7,680.11x = 24,579,612.93
  5. Step 5: Solve for x
    x = 24,579,612.93/7,680.11
  6. Step 6: Final answer
    x = 3,200.43

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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.