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Finding the Fourth Proportional to 7,230.51, 10,865.21 and 5,519.79

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Solution

The fourth proportional to 7,230.51, 10,865.21 and 5,519.79 is: 8,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.51 : 10,865.21 = 5,519.79 : x
  2. Step 2: Convert to fraction form
    7,230.51/10,865.21 = 5,519.79/x
  3. Step 3: Cross multiply
    7,230.51x = 10,865.21 × 5,519.79
  4. Step 4: Simplify right side
    7,230.51x = 59,973,649.91
  5. Step 5: Solve for x
    x = 59,973,649.91/7,230.51
  6. Step 6: Final answer
    x = 8,294.53

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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.