Home / 8,009.12-12,012.60-2,165.96

Finding the Fourth Proportional to 8,009.12, 12,012.60 and 2,165.96

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Solution

The fourth proportional to 8,009.12, 12,012.60 and 2,165.96 is: 3,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,009.12 : 12,012.60 = 2,165.96 : x
  2. Step 2: Convert to fraction form
    8,009.12/12,012.60 = 2,165.96/x
  3. Step 3: Cross multiply
    8,009.12x = 12,012.60 × 2,165.96
  4. Step 4: Simplify right side
    8,009.12x = 26,018,811.10
  5. Step 5: Solve for x
    x = 26,018,811.10/8,009.12
  6. Step 6: Final answer
    x = 3,248.65

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Double scale
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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.