Home / 2,199.09-3,294.05-1,318.80

Finding the Fourth Proportional to 2,199.09, 3,294.05 and 1,318.80

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Solution

The fourth proportional to 2,199.09, 3,294.05 and 1,318.80 is: 1,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.09 : 3,294.05 = 1,318.80 : x
  2. Step 2: Convert to fraction form
    2,199.09/3,294.05 = 1,318.80/x
  3. Step 3: Cross multiply
    2,199.09x = 3,294.05 × 1,318.80
  4. Step 4: Simplify right side
    2,199.09x = 4,344,186.55
  5. Step 5: Solve for x
    x = 4,344,186.55/2,199.09
  6. Step 6: Final answer
    x = 1,975.45

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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.