Home / 7,721.59-11,575.50-2,790.13

Finding the Fourth Proportional to 7,721.59, 11,575.50 and 2,790.13

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Solution

The fourth proportional to 7,721.59, 11,575.50 and 2,790.13 is: 4,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.59 : 11,575.50 = 2,790.13 : x
  2. Step 2: Convert to fraction form
    7,721.59/11,575.50 = 2,790.13/x
  3. Step 3: Cross multiply
    7,721.59x = 11,575.50 × 2,790.13
  4. Step 4: Simplify right side
    7,721.59x = 32,297,149.82
  5. Step 5: Solve for x
    x = 32,297,149.82/7,721.59
  6. Step 6: Final answer
    x = 4,182.71

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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.