Home / 2,422.17-3,319.32-2,188.89

Finding the Fourth Proportional to 2,422.17, 3,319.32 and 2,188.89

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Solution

The fourth proportional to 2,422.17, 3,319.32 and 2,188.89 is: 2,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.17 : 3,319.32 = 2,188.89 : x
  2. Step 2: Convert to fraction form
    2,422.17/3,319.32 = 2,188.89/x
  3. Step 3: Cross multiply
    2,422.17x = 3,319.32 × 2,188.89
  4. Step 4: Simplify right side
    2,422.17x = 7,265,615.41
  5. Step 5: Solve for x
    x = 7,265,615.41/2,422.17
  6. Step 6: Final answer
    x = 2,999.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.