Home / 3,890.60-5,368.84-2,398.66

Finding the Fourth Proportional to 3,890.60, 5,368.84 and 2,398.66

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Solution

The fourth proportional to 3,890.60, 5,368.84 and 2,398.66 is: 3,310.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.60 : 5,368.84 = 2,398.66 : x
  2. Step 2: Convert to fraction form
    3,890.60/5,368.84 = 2,398.66/x
  3. Step 3: Cross multiply
    3,890.60x = 5,368.84 × 2,398.66
  4. Step 4: Simplify right side
    3,890.60x = 12,877,982.92
  5. Step 5: Solve for x
    x = 12,877,982.92/3,890.60
  6. Step 6: Final answer
    x = 3,310.02

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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.