Home / 2,478.45-3,716.49-1,438.77

Finding the Fourth Proportional to 2,478.45, 3,716.49 and 1,438.77

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Solution

The fourth proportional to 2,478.45, 3,716.49 and 1,438.77 is: 2,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.45 : 3,716.49 = 1,438.77 : x
  2. Step 2: Convert to fraction form
    2,478.45/3,716.49 = 1,438.77/x
  3. Step 3: Cross multiply
    2,478.45x = 3,716.49 × 1,438.77
  4. Step 4: Simplify right side
    2,478.45x = 5,347,168.62
  5. Step 5: Solve for x
    x = 5,347,168.62/2,478.45
  6. Step 6: Final answer
    x = 2,157.47

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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.