Home / 1,786.12-2,679.36-615.97

Finding the Fourth Proportional to 1,786.12, 2,679.36 and 615.97

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Solution

The fourth proportional to 1,786.12, 2,679.36 and 615.97 is: 924.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.12 : 2,679.36 = 615.97 : x
  2. Step 2: Convert to fraction form
    1,786.12/2,679.36 = 615.97/x
  3. Step 3: Cross multiply
    1,786.12x = 2,679.36 × 615.97
  4. Step 4: Simplify right side
    1,786.12x = 1,650,398.68
  5. Step 5: Solve for x
    x = 1,650,398.68/1,786.12
  6. Step 6: Final answer
    x = 924.01

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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.