Home / 3,890.93-5,369.51-2,122.53

Finding the Fourth Proportional to 3,890.93, 5,369.51 and 2,122.53

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Solution

The fourth proportional to 3,890.93, 5,369.51 and 2,122.53 is: 2,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.93 : 5,369.51 = 2,122.53 : x
  2. Step 2: Convert to fraction form
    3,890.93/5,369.51 = 2,122.53/x
  3. Step 3: Cross multiply
    3,890.93x = 5,369.51 × 2,122.53
  4. Step 4: Simplify right side
    3,890.93x = 11,396,935.45
  5. Step 5: Solve for x
    x = 11,396,935.45/3,890.93
  6. Step 6: Final answer
    x = 2,929.11

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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.