Home / 8,230.20-12,345.30-3,856.20

Finding the Fourth Proportional to 8,230.20, 12,345.30 and 3,856.20

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Solution

The fourth proportional to 8,230.20, 12,345.30 and 3,856.20 is: 5,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,230.20 : 12,345.30 = 3,856.20 : x
  2. Step 2: Convert to fraction form
    8,230.20/12,345.30 = 3,856.20/x
  3. Step 3: Cross multiply
    8,230.20x = 12,345.30 × 3,856.20
  4. Step 4: Simplify right side
    8,230.20x = 47,605,945.86
  5. Step 5: Solve for x
    x = 47,605,945.86/8,230.20
  6. Step 6: Final answer
    x = 5,784.30

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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.