Home / 8,991.16-13,488.11-3,147.32

Finding the Fourth Proportional to 8,991.16, 13,488.11 and 3,147.32

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Solution

The fourth proportional to 8,991.16, 13,488.11 and 3,147.32 is: 4,721.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.16 : 13,488.11 = 3,147.32 : x
  2. Step 2: Convert to fraction form
    8,991.16/13,488.11 = 3,147.32/x
  3. Step 3: Cross multiply
    8,991.16x = 13,488.11 × 3,147.32
  4. Step 4: Simplify right side
    8,991.16x = 42,451,398.37
  5. Step 5: Solve for x
    x = 42,451,398.37/8,991.16
  6. Step 6: Final answer
    x = 4,721.46

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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.