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Finding the Fourth Proportional to 7,680.74, 11,508.51 and 7,392.92

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Solution

The fourth proportional to 7,680.74, 11,508.51 and 7,392.92 is: 11,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.74 : 11,508.51 = 7,392.92 : x
  2. Step 2: Convert to fraction form
    7,680.74/11,508.51 = 7,392.92/x
  3. Step 3: Cross multiply
    7,680.74x = 11,508.51 × 7,392.92
  4. Step 4: Simplify right side
    7,680.74x = 85,081,493.75
  5. Step 5: Solve for x
    x = 85,081,493.75/7,680.74
  6. Step 6: Final answer
    x = 11,077.25

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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.