Home / 9,131.10-13,698.69-2,891.47

Finding the Fourth Proportional to 9,131.10, 13,698.69 and 2,891.47

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Solution

The fourth proportional to 9,131.10, 13,698.69 and 2,891.47 is: 4,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.10 : 13,698.69 = 2,891.47 : x
  2. Step 2: Convert to fraction form
    9,131.10/13,698.69 = 2,891.47/x
  3. Step 3: Cross multiply
    9,131.10x = 13,698.69 × 2,891.47
  4. Step 4: Simplify right side
    9,131.10x = 39,609,351.17
  5. Step 5: Solve for x
    x = 39,609,351.17/9,131.10
  6. Step 6: Final answer
    x = 4,337.85

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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.