Home / 8,821.08-13,231.34-2,977.20

Finding the Fourth Proportional to 8,821.08, 13,231.34 and 2,977.20

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Solution

The fourth proportional to 8,821.08, 13,231.34 and 2,977.20 is: 4,465.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.08 : 13,231.34 = 2,977.20 : x
  2. Step 2: Convert to fraction form
    8,821.08/13,231.34 = 2,977.20/x
  3. Step 3: Cross multiply
    8,821.08x = 13,231.34 × 2,977.20
  4. Step 4: Simplify right side
    8,821.08x = 39,392,345.45
  5. Step 5: Solve for x
    x = 39,392,345.45/8,821.08
  6. Step 6: Final answer
    x = 4,465.71

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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.