Home / 8,212.40-12,320.76-2,369.48

Finding the Fourth Proportional to 8,212.40, 12,320.76 and 2,369.48

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Solution

The fourth proportional to 8,212.40, 12,320.76 and 2,369.48 is: 3,554.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.40 : 12,320.76 = 2,369.48 : x
  2. Step 2: Convert to fraction form
    8,212.40/12,320.76 = 2,369.48/x
  3. Step 3: Cross multiply
    8,212.40x = 12,320.76 × 2,369.48
  4. Step 4: Simplify right side
    8,212.40x = 29,193,794.40
  5. Step 5: Solve for x
    x = 29,193,794.40/8,212.40
  6. Step 6: Final answer
    x = 3,554.84

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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.