Home / 3,902.40-5,384.01-2,389.41

Finding the Fourth Proportional to 3,902.40, 5,384.01 and 2,389.41

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Solution

The fourth proportional to 3,902.40, 5,384.01 and 2,389.41 is: 3,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.40 : 5,384.01 = 2,389.41 : x
  2. Step 2: Convert to fraction form
    3,902.40/5,384.01 = 2,389.41/x
  3. Step 3: Cross multiply
    3,902.40x = 5,384.01 × 2,389.41
  4. Step 4: Simplify right side
    3,902.40x = 12,864,607.33
  5. Step 5: Solve for x
    x = 12,864,607.33/3,902.40
  6. Step 6: Final answer
    x = 3,296.59

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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.