Home / 8,318.30-12,477.65-3,936.20

Finding the Fourth Proportional to 8,318.30, 12,477.65 and 3,936.20

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Solution

The fourth proportional to 8,318.30, 12,477.65 and 3,936.20 is: 5,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.30 : 12,477.65 = 3,936.20 : x
  2. Step 2: Convert to fraction form
    8,318.30/12,477.65 = 3,936.20/x
  3. Step 3: Cross multiply
    8,318.30x = 12,477.65 × 3,936.20
  4. Step 4: Simplify right side
    8,318.30x = 49,114,443.86
  5. Step 5: Solve for x
    x = 49,114,443.86/8,318.30
  6. Step 6: Final answer
    x = 5,904.39

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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.