Home / 4,878.40-7,314.90-2,104.60

Finding the Fourth Proportional to 4,878.40, 7,314.90 and 2,104.60

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Solution

The fourth proportional to 4,878.40, 7,314.90 and 2,104.60 is: 3,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.40 : 7,314.90 = 2,104.60 : x
  2. Step 2: Convert to fraction form
    4,878.40/7,314.90 = 2,104.60/x
  3. Step 3: Cross multiply
    4,878.40x = 7,314.90 × 2,104.60
  4. Step 4: Simplify right side
    4,878.40x = 15,394,938.54
  5. Step 5: Solve for x
    x = 15,394,938.54/4,878.40
  6. Step 6: Final answer
    x = 3,155.74

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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.