Home / 8,109.56-12,164.45-2,915.44

Finding the Fourth Proportional to 8,109.56, 12,164.45 and 2,915.44

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Solution

The fourth proportional to 8,109.56, 12,164.45 and 2,915.44 is: 4,373.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.56 : 12,164.45 = 2,915.44 : x
  2. Step 2: Convert to fraction form
    8,109.56/12,164.45 = 2,915.44/x
  3. Step 3: Cross multiply
    8,109.56x = 12,164.45 × 2,915.44
  4. Step 4: Simplify right side
    8,109.56x = 35,464,679.12
  5. Step 5: Solve for x
    x = 35,464,679.12/8,109.56
  6. Step 6: Final answer
    x = 4,373.19

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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.