Home / 7,715.12-11,572.74-1,871.73

Finding the Fourth Proportional to 7,715.12, 11,572.74 and 1,871.73

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Solution

The fourth proportional to 7,715.12, 11,572.74 and 1,871.73 is: 2,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.12 : 11,572.74 = 1,871.73 : x
  2. Step 2: Convert to fraction form
    7,715.12/11,572.74 = 1,871.73/x
  3. Step 3: Cross multiply
    7,715.12x = 11,572.74 × 1,871.73
  4. Step 4: Simplify right side
    7,715.12x = 21,661,044.64
  5. Step 5: Solve for x
    x = 21,661,044.64/7,715.12
  6. Step 6: Final answer
    x = 2,807.61

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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.