Home / 7,761.41-11,642.51-2,215.57

Finding the Fourth Proportional to 7,761.41, 11,642.51 and 2,215.57

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Solution

The fourth proportional to 7,761.41, 11,642.51 and 2,215.57 is: 3,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.41 : 11,642.51 = 2,215.57 : x
  2. Step 2: Convert to fraction form
    7,761.41/11,642.51 = 2,215.57/x
  3. Step 3: Cross multiply
    7,761.41x = 11,642.51 × 2,215.57
  4. Step 4: Simplify right side
    7,761.41x = 25,794,772.31
  5. Step 5: Solve for x
    x = 25,794,772.31/7,761.41
  6. Step 6: Final answer
    x = 3,323.46

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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.