Home / 1,912.32-2,860.80-1,666.56

Finding the Fourth Proportional to 1,912.32, 2,860.80 and 1,666.56

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Solution

The fourth proportional to 1,912.32, 2,860.80 and 1,666.56 is: 2,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.32 : 2,860.80 = 1,666.56 : x
  2. Step 2: Convert to fraction form
    1,912.32/2,860.80 = 1,666.56/x
  3. Step 3: Cross multiply
    1,912.32x = 2,860.80 × 1,666.56
  4. Step 4: Simplify right side
    1,912.32x = 4,767,694.85
  5. Step 5: Solve for x
    x = 4,767,694.85/1,912.32
  6. Step 6: Final answer
    x = 2,493.15

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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.