Home / 8,977.64-12,388.50-5,621.96

Finding the Fourth Proportional to 8,977.64, 12,388.50 and 5,621.96

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Solution

The fourth proportional to 8,977.64, 12,388.50 and 5,621.96 is: 7,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.64 : 12,388.50 = 5,621.96 : x
  2. Step 2: Convert to fraction form
    8,977.64/12,388.50 = 5,621.96/x
  3. Step 3: Cross multiply
    8,977.64x = 12,388.50 × 5,621.96
  4. Step 4: Simplify right side
    8,977.64x = 69,647,651.46
  5. Step 5: Solve for x
    x = 69,647,651.46/8,977.64
  6. Step 6: Final answer
    x = 7,757.90

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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.