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Finding the Fourth Proportional to 8,873.76, 12,247 and 5,729.34

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Solution

The fourth proportional to 8,873.76, 12,247 and 5,729.34 is: 7,907.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.76 : 12,247 = 5,729.34 : x
  2. Step 2: Convert to fraction form
    8,873.76/12,247 = 5,729.34/x
  3. Step 3: Cross multiply
    8,873.76x = 12,247 × 5,729.34
  4. Step 4: Simplify right side
    8,873.76x = 70,167,226.98
  5. Step 5: Solve for x
    x = 70,167,226.98/8,873.76
  6. Step 6: Final answer
    x = 7,907.27

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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.