Home / 1,786.12-2,462.56-1,387.11

Finding the Fourth Proportional to 1,786.12, 2,462.56 and 1,387.11

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Solution

The fourth proportional to 1,786.12, 2,462.56 and 1,387.11 is: 1,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.12 : 2,462.56 = 1,387.11 : x
  2. Step 2: Convert to fraction form
    1,786.12/2,462.56 = 1,387.11/x
  3. Step 3: Cross multiply
    1,786.12x = 2,462.56 × 1,387.11
  4. Step 4: Simplify right side
    1,786.12x = 3,415,828.90
  5. Step 5: Solve for x
    x = 3,415,828.90/1,786.12
  6. Step 6: Final answer
    x = 1,912.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.