Home / 9,131.18-13,698.81-2,891.57

Finding the Fourth Proportional to 9,131.18, 13,698.81 and 2,891.57

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Solution

The fourth proportional to 9,131.18, 13,698.81 and 2,891.57 is: 4,338.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.18 : 13,698.81 = 2,891.57 : x
  2. Step 2: Convert to fraction form
    9,131.18/13,698.81 = 2,891.57/x
  3. Step 3: Cross multiply
    9,131.18x = 13,698.81 × 2,891.57
  4. Step 4: Simplify right side
    9,131.18x = 39,610,999.54
  5. Step 5: Solve for x
    x = 39,610,999.54/9,131.18
  6. Step 6: Final answer
    x = 4,338.00

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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.