Home / 9,000.96-12,422.88-6,640.08

Finding the Fourth Proportional to 9,000.96, 12,422.88 and 6,640.08

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Solution

The fourth proportional to 9,000.96, 12,422.88 and 6,640.08 is: 9,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.96 : 12,422.88 = 6,640.08 : x
  2. Step 2: Convert to fraction form
    9,000.96/12,422.88 = 6,640.08/x
  3. Step 3: Cross multiply
    9,000.96x = 12,422.88 × 6,640.08
  4. Step 4: Simplify right side
    9,000.96x = 82,488,917.03
  5. Step 5: Solve for x
    x = 82,488,917.03/9,000.96
  6. Step 6: Final answer
    x = 9,164.46

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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.