Home / 2,490.05-3,738.80-2,157.53

Finding the Fourth Proportional to 2,490.05, 3,738.80 and 2,157.53

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Solution

The fourth proportional to 2,490.05, 3,738.80 and 2,157.53 is: 3,239.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.05 : 3,738.80 = 2,157.53 : x
  2. Step 2: Convert to fraction form
    2,490.05/3,738.80 = 2,157.53/x
  3. Step 3: Cross multiply
    2,490.05x = 3,738.80 × 2,157.53
  4. Step 4: Simplify right side
    2,490.05x = 8,066,559.86
  5. Step 5: Solve for x
    x = 8,066,559.86/2,490.05
  6. Step 6: Final answer
    x = 3,239.51

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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.