Home / 7,680.57-11,520.45-2,486.04

Finding the Fourth Proportional to 7,680.57, 11,520.45 and 2,486.04

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Solution

The fourth proportional to 7,680.57, 11,520.45 and 2,486.04 is: 3,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.57 : 11,520.45 = 2,486.04 : x
  2. Step 2: Convert to fraction form
    7,680.57/11,520.45 = 2,486.04/x
  3. Step 3: Cross multiply
    7,680.57x = 11,520.45 × 2,486.04
  4. Step 4: Simplify right side
    7,680.57x = 28,640,299.52
  5. Step 5: Solve for x
    x = 28,640,299.52/7,680.57
  6. Step 6: Final answer
    x = 3,728.93

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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.