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Finding the Fourth Proportional to 8,860.70, 13,291.86 and 2,286.90

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Solution

The fourth proportional to 8,860.70, 13,291.86 and 2,286.90 is: 3,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.70 : 13,291.86 = 2,286.90 : x
  2. Step 2: Convert to fraction form
    8,860.70/13,291.86 = 2,286.90/x
  3. Step 3: Cross multiply
    8,860.70x = 13,291.86 × 2,286.90
  4. Step 4: Simplify right side
    8,860.70x = 30,397,154.63
  5. Step 5: Solve for x
    x = 30,397,154.63/8,860.70
  6. Step 6: Final answer
    x = 3,430.56

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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.