Home / 7,209.39-10,812.51-2,765.55

Finding the Fourth Proportional to 7,209.39, 10,812.51 and 2,765.55

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Solution

The fourth proportional to 7,209.39, 10,812.51 and 2,765.55 is: 4,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.39 : 10,812.51 = 2,765.55 : x
  2. Step 2: Convert to fraction form
    7,209.39/10,812.51 = 2,765.55/x
  3. Step 3: Cross multiply
    7,209.39x = 10,812.51 × 2,765.55
  4. Step 4: Simplify right side
    7,209.39x = 29,902,537.03
  5. Step 5: Solve for x
    x = 29,902,537.03/7,209.39
  6. Step 6: Final answer
    x = 4,147.72

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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.