Home / 8,529.12-12,808.32-5,261.52

Finding the Fourth Proportional to 8,529.12, 12,808.32 and 5,261.52

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Solution

The fourth proportional to 8,529.12, 12,808.32 and 5,261.52 is: 7,901.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.12 : 12,808.32 = 5,261.52 : x
  2. Step 2: Convert to fraction form
    8,529.12/12,808.32 = 5,261.52/x
  3. Step 3: Cross multiply
    8,529.12x = 12,808.32 × 5,261.52
  4. Step 4: Simplify right side
    8,529.12x = 67,391,231.85
  5. Step 5: Solve for x
    x = 67,391,231.85/8,529.12
  6. Step 6: Final answer
    x = 7,901.31

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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.