Home / 2,135.91-3,199.71-1,403.28

Finding the Fourth Proportional to 2,135.91, 3,199.71 and 1,403.28

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Solution

The fourth proportional to 2,135.91, 3,199.71 and 1,403.28 is: 2,102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.91 : 3,199.71 = 1,403.28 : x
  2. Step 2: Convert to fraction form
    2,135.91/3,199.71 = 1,403.28/x
  3. Step 3: Cross multiply
    2,135.91x = 3,199.71 × 1,403.28
  4. Step 4: Simplify right side
    2,135.91x = 4,490,089.05
  5. Step 5: Solve for x
    x = 4,490,089.05/2,135.91
  6. Step 6: Final answer
    x = 2,102.19

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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.