Home / 8,191.88-12,289.56-2,645.52

Finding the Fourth Proportional to 8,191.88, 12,289.56 and 2,645.52

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Solution

The fourth proportional to 8,191.88, 12,289.56 and 2,645.52 is: 3,968.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.88 : 12,289.56 = 2,645.52 : x
  2. Step 2: Convert to fraction form
    8,191.88/12,289.56 = 2,645.52/x
  3. Step 3: Cross multiply
    8,191.88x = 12,289.56 × 2,645.52
  4. Step 4: Simplify right side
    8,191.88x = 32,512,276.77
  5. Step 5: Solve for x
    x = 32,512,276.77/8,191.88
  6. Step 6: Final answer
    x = 3,968.84

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Double scale
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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.