Home / 3,429.86-5,143.75-1,089.77

Finding the Fourth Proportional to 3,429.86, 5,143.75 and 1,089.77

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Solution

The fourth proportional to 3,429.86, 5,143.75 and 1,089.77 is: 1,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.86 : 5,143.75 = 1,089.77 : x
  2. Step 2: Convert to fraction form
    3,429.86/5,143.75 = 1,089.77/x
  3. Step 3: Cross multiply
    3,429.86x = 5,143.75 × 1,089.77
  4. Step 4: Simplify right side
    3,429.86x = 5,605,475.99
  5. Step 5: Solve for x
    x = 5,605,475.99/3,429.86
  6. Step 6: Final answer
    x = 1,634.32

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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.