Home / 7,187.19-10,780.82-2,189.63

Finding the Fourth Proportional to 7,187.19, 10,780.82 and 2,189.63

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Solution

The fourth proportional to 7,187.19, 10,780.82 and 2,189.63 is: 3,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.19 : 10,780.82 = 2,189.63 : x
  2. Step 2: Convert to fraction form
    7,187.19/10,780.82 = 2,189.63/x
  3. Step 3: Cross multiply
    7,187.19x = 10,780.82 × 2,189.63
  4. Step 4: Simplify right side
    7,187.19x = 23,605,942.04
  5. Step 5: Solve for x
    x = 23,605,942.04/7,187.19
  6. Step 6: Final answer
    x = 3,284.45

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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.