Home / 7,161.20-10,754.60-5,215.60

Finding the Fourth Proportional to 7,161.20, 10,754.60 and 5,215.60

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Solution

The fourth proportional to 7,161.20, 10,754.60 and 5,215.60 is: 7,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.20 : 10,754.60 = 5,215.60 : x
  2. Step 2: Convert to fraction form
    7,161.20/10,754.60 = 5,215.60/x
  3. Step 3: Cross multiply
    7,161.20x = 10,754.60 × 5,215.60
  4. Step 4: Simplify right side
    7,161.20x = 56,091,691.76
  5. Step 5: Solve for x
    x = 56,091,691.76/7,161.20
  6. Step 6: Final answer
    x = 7,832.72

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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.