Home / 2,621.86-3,912.35-2,388.98

Finding the Fourth Proportional to 2,621.86, 3,912.35 and 2,388.98

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Solution

The fourth proportional to 2,621.86, 3,912.35 and 2,388.98 is: 3,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.86 : 3,912.35 = 2,388.98 : x
  2. Step 2: Convert to fraction form
    2,621.86/3,912.35 = 2,388.98/x
  3. Step 3: Cross multiply
    2,621.86x = 3,912.35 × 2,388.98
  4. Step 4: Simplify right side
    2,621.86x = 9,346,523.74
  5. Step 5: Solve for x
    x = 9,346,523.74/2,621.86
  6. Step 6: Final answer
    x = 3,564.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.