Home / 8,320.37-12,473.26-3,129.89

Finding the Fourth Proportional to 8,320.37, 12,473.26 and 3,129.89

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Solution

The fourth proportional to 8,320.37, 12,473.26 and 3,129.89 is: 4,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.37 : 12,473.26 = 3,129.89 : x
  2. Step 2: Convert to fraction form
    8,320.37/12,473.26 = 3,129.89/x
  3. Step 3: Cross multiply
    8,320.37x = 12,473.26 × 3,129.89
  4. Step 4: Simplify right side
    8,320.37x = 39,039,853.73
  5. Step 5: Solve for x
    x = 39,039,853.73/8,320.37
  6. Step 6: Final answer
    x = 4,692.08

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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.