Home / 9,120.87-13,681.30-2,195.37

Finding the Fourth Proportional to 9,120.87, 13,681.30 and 2,195.37

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Solution

The fourth proportional to 9,120.87, 13,681.30 and 2,195.37 is: 3,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.87 : 13,681.30 = 2,195.37 : x
  2. Step 2: Convert to fraction form
    9,120.87/13,681.30 = 2,195.37/x
  3. Step 3: Cross multiply
    9,120.87x = 13,681.30 × 2,195.37
  4. Step 4: Simplify right side
    9,120.87x = 30,035,447.17
  5. Step 5: Solve for x
    x = 30,035,447.17/9,120.87
  6. Step 6: Final answer
    x = 3,293.05

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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.