Home / 9,422.40-12,992.16-6,761.28

Finding the Fourth Proportional to 9,422.40, 12,992.16 and 6,761.28

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Solution

The fourth proportional to 9,422.40, 12,992.16 and 6,761.28 is: 9,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,422.40 : 12,992.16 = 6,761.28 : x
  2. Step 2: Convert to fraction form
    9,422.40/12,992.16 = 6,761.28/x
  3. Step 3: Cross multiply
    9,422.40x = 12,992.16 × 6,761.28
  4. Step 4: Simplify right side
    9,422.40x = 87,843,631.56
  5. Step 5: Solve for x
    x = 87,843,631.56/9,422.40
  6. Step 6: Final answer
    x = 9,322.85

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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.