Home / 1,786.47-2,676.75-615.83

Finding the Fourth Proportional to 1,786.47, 2,676.75 and 615.83

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Solution

The fourth proportional to 1,786.47, 2,676.75 and 615.83 is: 922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.47 : 2,676.75 = 615.83 : x
  2. Step 2: Convert to fraction form
    1,786.47/2,676.75 = 615.83/x
  3. Step 3: Cross multiply
    1,786.47x = 2,676.75 × 615.83
  4. Step 4: Simplify right side
    1,786.47x = 1,648,422.95
  5. Step 5: Solve for x
    x = 1,648,422.95/1,786.47
  6. Step 6: Final answer
    x = 922.73

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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.