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Finding the Fourth Proportional to 8,726.78, 13,080.18 and 4,334.42

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Solution

The fourth proportional to 8,726.78, 13,080.18 and 4,334.42 is: 6,496.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.78 : 13,080.18 = 4,334.42 : x
  2. Step 2: Convert to fraction form
    8,726.78/13,080.18 = 4,334.42/x
  3. Step 3: Cross multiply
    8,726.78x = 13,080.18 × 4,334.42
  4. Step 4: Simplify right side
    8,726.78x = 56,694,993.80
  5. Step 5: Solve for x
    x = 56,694,993.80/8,726.78
  6. Step 6: Final answer
    x = 6,496.67

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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.