Home / 8,215.36-12,325.20-3,830.56

Finding the Fourth Proportional to 8,215.36, 12,325.20 and 3,830.56

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Solution

The fourth proportional to 8,215.36, 12,325.20 and 3,830.56 is: 5,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.36 : 12,325.20 = 3,830.56 : x
  2. Step 2: Convert to fraction form
    8,215.36/12,325.20 = 3,830.56/x
  3. Step 3: Cross multiply
    8,215.36x = 12,325.20 × 3,830.56
  4. Step 4: Simplify right side
    8,215.36x = 47,212,418.11
  5. Step 5: Solve for x
    x = 47,212,418.11/8,215.36
  6. Step 6: Final answer
    x = 5,746.85

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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.