Home / 8,215.92-12,320.16-3,834.63

Finding the Fourth Proportional to 8,215.92, 12,320.16 and 3,834.63

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Solution

The fourth proportional to 8,215.92, 12,320.16 and 3,834.63 is: 5,750.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.92 : 12,320.16 = 3,834.63 : x
  2. Step 2: Convert to fraction form
    8,215.92/12,320.16 = 3,834.63/x
  3. Step 3: Cross multiply
    8,215.92x = 12,320.16 × 3,834.63
  4. Step 4: Simplify right side
    8,215.92x = 47,243,255.14
  5. Step 5: Solve for x
    x = 47,243,255.14/8,215.92
  6. Step 6: Final answer
    x = 5,750.21

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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.