Home / 2,679.40-4,029.90-2,398.60

Finding the Fourth Proportional to 2,679.40, 4,029.90 and 2,398.60

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Solution

The fourth proportional to 2,679.40, 4,029.90 and 2,398.60 is: 3,607.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.40 : 4,029.90 = 2,398.60 : x
  2. Step 2: Convert to fraction form
    2,679.40/4,029.90 = 2,398.60/x
  3. Step 3: Cross multiply
    2,679.40x = 4,029.90 × 2,398.60
  4. Step 4: Simplify right side
    2,679.40x = 9,666,118.14
  5. Step 5: Solve for x
    x = 9,666,118.14/2,679.40
  6. Step 6: Final answer
    x = 3,607.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.