Home / 7,671.87-11,507.76-2,125.16

Finding the Fourth Proportional to 7,671.87, 11,507.76 and 2,125.16

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Solution

The fourth proportional to 7,671.87, 11,507.76 and 2,125.16 is: 3,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,671.87 : 11,507.76 = 2,125.16 : x
  2. Step 2: Convert to fraction form
    7,671.87/11,507.76 = 2,125.16/x
  3. Step 3: Cross multiply
    7,671.87x = 11,507.76 × 2,125.16
  4. Step 4: Simplify right side
    7,671.87x = 24,455,773.70
  5. Step 5: Solve for x
    x = 24,455,773.70/7,671.87
  6. Step 6: Final answer
    x = 3,187.72

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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.