Home / 1,962.74-2,707.79-1,215.38

Finding the Fourth Proportional to 1,962.74, 2,707.79 and 1,215.38

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Solution

The fourth proportional to 1,962.74, 2,707.79 and 1,215.38 is: 1,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.74 : 2,707.79 = 1,215.38 : x
  2. Step 2: Convert to fraction form
    1,962.74/2,707.79 = 1,215.38/x
  3. Step 3: Cross multiply
    1,962.74x = 2,707.79 × 1,215.38
  4. Step 4: Simplify right side
    1,962.74x = 3,290,974.19
  5. Step 5: Solve for x
    x = 3,290,974.19/1,962.74
  6. Step 6: Final answer
    x = 1,676.73

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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.