Home / 3,513.12-5,270.22-1,172.40

Finding the Fourth Proportional to 3,513.12, 5,270.22 and 1,172.40

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Solution

The fourth proportional to 3,513.12, 5,270.22 and 1,172.40 is: 1,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.12 : 5,270.22 = 1,172.40 : x
  2. Step 2: Convert to fraction form
    3,513.12/5,270.22 = 1,172.40/x
  3. Step 3: Cross multiply
    3,513.12x = 5,270.22 × 1,172.40
  4. Step 4: Simplify right side
    3,513.12x = 6,178,805.93
  5. Step 5: Solve for x
    x = 6,178,805.93/3,513.12
  6. Step 6: Final answer
    x = 1,758.78

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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.