Home / 7,186.50-10,780.38-1,992.38

Finding the Fourth Proportional to 7,186.50, 10,780.38 and 1,992.38

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Solution

The fourth proportional to 7,186.50, 10,780.38 and 1,992.38 is: 2,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.50 : 10,780.38 = 1,992.38 : x
  2. Step 2: Convert to fraction form
    7,186.50/10,780.38 = 1,992.38/x
  3. Step 3: Cross multiply
    7,186.50x = 10,780.38 × 1,992.38
  4. Step 4: Simplify right side
    7,186.50x = 21,478,559.60
  5. Step 5: Solve for x
    x = 21,478,559.60/7,186.50
  6. Step 6: Final answer
    x = 2,988.74

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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.