Home / 8,305.92-12,455.28-3,110.40

Finding the Fourth Proportional to 8,305.92, 12,455.28 and 3,110.40

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Solution

The fourth proportional to 8,305.92, 12,455.28 and 3,110.40 is: 4,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.92 : 12,455.28 = 3,110.40 : x
  2. Step 2: Convert to fraction form
    8,305.92/12,455.28 = 3,110.40/x
  3. Step 3: Cross multiply
    8,305.92x = 12,455.28 × 3,110.40
  4. Step 4: Simplify right side
    8,305.92x = 38,740,902.91
  5. Step 5: Solve for x
    x = 38,740,902.91/8,305.92
  6. Step 6: Final answer
    x = 4,664.25

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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.