Home / 3,993,420.27-5,510,919.85-2,157,878.52

Finding the Fourth Proportional to 3,993,420.27, 5,510,919.85 and 2,157,878.52

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Solution

The fourth proportional to 3,993,420.27, 5,510,919.85 and 2,157,878.52 is: 2,977,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993,420.27 : 5,510,919.85 = 2,157,878.52 : x
  2. Step 2: Convert to fraction form
    3,993,420.27/5,510,919.85 = 2,157,878.52/x
  3. Step 3: Cross multiply
    3,993,420.27x = 5,510,919.85 × 2,157,878.52
  4. Step 4: Simplify right side
    3,993,420.27x = 11,891,895,564,361.93
  5. Step 5: Solve for x
    x = 11,891,895,564,361.93/3,993,420.27
  6. Step 6: Final answer
    x = 2,977,872.29

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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.