Home / 3,465.15-4,781.91-1,972.78

Finding the Fourth Proportional to 3,465.15, 4,781.91 and 1,972.78

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Solution

The fourth proportional to 3,465.15, 4,781.91 and 1,972.78 is: 2,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.15 : 4,781.91 = 1,972.78 : x
  2. Step 2: Convert to fraction form
    3,465.15/4,781.91 = 1,972.78/x
  3. Step 3: Cross multiply
    3,465.15x = 4,781.91 × 1,972.78
  4. Step 4: Simplify right side
    3,465.15x = 9,433,656.41
  5. Step 5: Solve for x
    x = 9,433,656.41/3,465.15
  6. Step 6: Final answer
    x = 2,722.44

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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.