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Finding the Fourth Proportional to 5,230, 7,843.36 and 2,889.12

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Solution

The fourth proportional to 5,230, 7,843.36 and 2,889.12 is: 4,332.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230 : 7,843.36 = 2,889.12 : x
  2. Step 2: Convert to fraction form
    5,230/7,843.36 = 2,889.12/x
  3. Step 3: Cross multiply
    5,230x = 7,843.36 × 2,889.12
  4. Step 4: Simplify right side
    5,230x = 22,660,408.24
  5. Step 5: Solve for x
    x = 22,660,408.24/5,230
  6. Step 6: Final answer
    x = 4,332.77

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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.