Home / 9,120.80-13,681.21-2,195.30

Finding the Fourth Proportional to 9,120.80, 13,681.21 and 2,195.30

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Solution

The fourth proportional to 9,120.80, 13,681.21 and 2,195.30 is: 3,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.80 : 13,681.21 = 2,195.30 : x
  2. Step 2: Convert to fraction form
    9,120.80/13,681.21 = 2,195.30/x
  3. Step 3: Cross multiply
    9,120.80x = 13,681.21 × 2,195.30
  4. Step 4: Simplify right side
    9,120.80x = 30,034,389.03
  5. Step 5: Solve for x
    x = 30,034,389.03/9,120.80
  6. Step 6: Final answer
    x = 3,292.95

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1.5x scale

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.