Home / 3,128.02-4,691.99-936.77

Finding the Fourth Proportional to 3,128.02, 4,691.99 and 936.77

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Solution

The fourth proportional to 3,128.02, 4,691.99 and 936.77 is: 1,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.02 : 4,691.99 = 936.77 : x
  2. Step 2: Convert to fraction form
    3,128.02/4,691.99 = 936.77/x
  3. Step 3: Cross multiply
    3,128.02x = 4,691.99 × 936.77
  4. Step 4: Simplify right side
    3,128.02x = 4,395,294.35
  5. Step 5: Solve for x
    x = 4,395,294.35/3,128.02
  6. Step 6: Final answer
    x = 1,405.14

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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.