Home / 2,478.61-3,716.74-1,438.94

Finding the Fourth Proportional to 2,478.61, 3,716.74 and 1,438.94

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Solution

The fourth proportional to 2,478.61, 3,716.74 and 1,438.94 is: 2,157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.61 : 3,716.74 = 1,438.94 : x
  2. Step 2: Convert to fraction form
    2,478.61/3,716.74 = 1,438.94/x
  3. Step 3: Cross multiply
    2,478.61x = 3,716.74 × 1,438.94
  4. Step 4: Simplify right side
    2,478.61x = 5,348,147.27
  5. Step 5: Solve for x
    x = 5,348,147.27/2,478.61
  6. Step 6: Final answer
    x = 2,157.72

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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.