Home / 7,186.12-10,780.81-2,188.95

Finding the Fourth Proportional to 7,186.12, 10,780.81 and 2,188.95

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Solution

The fourth proportional to 7,186.12, 10,780.81 and 2,188.95 is: 3,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.12 : 10,780.81 = 2,188.95 : x
  2. Step 2: Convert to fraction form
    7,186.12/10,780.81 = 2,188.95/x
  3. Step 3: Cross multiply
    7,186.12x = 10,780.81 × 2,188.95
  4. Step 4: Simplify right side
    7,186.12x = 23,598,608.15
  5. Step 5: Solve for x
    x = 23,598,608.15/7,186.12
  6. Step 6: Final answer
    x = 3,283.91

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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.