Home / 9,194.90-12,689.28-5,215.88

Finding the Fourth Proportional to 9,194.90, 12,689.28 and 5,215.88

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Solution

The fourth proportional to 9,194.90, 12,689.28 and 5,215.88 is: 7,198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,194.90 : 12,689.28 = 5,215.88 : x
  2. Step 2: Convert to fraction form
    9,194.90/12,689.28 = 5,215.88/x
  3. Step 3: Cross multiply
    9,194.90x = 12,689.28 × 5,215.88
  4. Step 4: Simplify right side
    9,194.90x = 66,185,761.77
  5. Step 5: Solve for x
    x = 66,185,761.77/9,194.90
  6. Step 6: Final answer
    x = 7,198.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.