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Finding the Fourth Proportional to 7,102.62, 9,798.18 and 5,519.88

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Solution

The fourth proportional to 7,102.62, 9,798.18 and 5,519.88 is: 7,614.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.62 : 9,798.18 = 5,519.88 : x
  2. Step 2: Convert to fraction form
    7,102.62/9,798.18 = 5,519.88/x
  3. Step 3: Cross multiply
    7,102.62x = 9,798.18 × 5,519.88
  4. Step 4: Simplify right side
    7,102.62x = 54,084,777.82
  5. Step 5: Solve for x
    x = 54,084,777.82/7,102.62
  6. Step 6: Final answer
    x = 7,614.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.