Home / 2,238.81-3,354.09-1,992.78

Finding the Fourth Proportional to 2,238.81, 3,354.09 and 1,992.78

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Solution

The fourth proportional to 2,238.81, 3,354.09 and 1,992.78 is: 2,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.81 : 3,354.09 = 1,992.78 : x
  2. Step 2: Convert to fraction form
    2,238.81/3,354.09 = 1,992.78/x
  3. Step 3: Cross multiply
    2,238.81x = 3,354.09 × 1,992.78
  4. Step 4: Simplify right side
    2,238.81x = 6,683,963.47
  5. Step 5: Solve for x
    x = 6,683,963.47/2,238.81
  6. Step 6: Final answer
    x = 2,985.50

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1.5x scale

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.