Home / 3,238.50-4,468.95-1,911.90

Finding the Fourth Proportional to 3,238.50, 4,468.95 and 1,911.90

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Solution

The fourth proportional to 3,238.50, 4,468.95 and 1,911.90 is: 2,638.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.50 : 4,468.95 = 1,911.90 : x
  2. Step 2: Convert to fraction form
    3,238.50/4,468.95 = 1,911.90/x
  3. Step 3: Cross multiply
    3,238.50x = 4,468.95 × 1,911.90
  4. Step 4: Simplify right side
    3,238.50x = 8,544,185.51
  5. Step 5: Solve for x
    x = 8,544,185.51/3,238.50
  6. Step 6: Final answer
    x = 2,638.32

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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.