Home / 7,731.92-11,603.96-3,118.16

Finding the Fourth Proportional to 7,731.92, 11,603.96 and 3,118.16

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Solution

The fourth proportional to 7,731.92, 11,603.96 and 3,118.16 is: 4,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,731.92 : 11,603.96 = 3,118.16 : x
  2. Step 2: Convert to fraction form
    7,731.92/11,603.96 = 3,118.16/x
  3. Step 3: Cross multiply
    7,731.92x = 11,603.96 × 3,118.16
  4. Step 4: Simplify right side
    7,731.92x = 36,183,003.91
  5. Step 5: Solve for x
    x = 36,183,003.91/7,731.92
  6. Step 6: Final answer
    x = 4,679.69

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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.