Home / 2,878.80-4,307.40-2,619.60

Finding the Fourth Proportional to 2,878.80, 4,307.40 and 2,619.60

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Solution

The fourth proportional to 2,878.80, 4,307.40 and 2,619.60 is: 3,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.80 : 4,307.40 = 2,619.60 : x
  2. Step 2: Convert to fraction form
    2,878.80/4,307.40 = 2,619.60/x
  3. Step 3: Cross multiply
    2,878.80x = 4,307.40 × 2,619.60
  4. Step 4: Simplify right side
    2,878.80x = 11,283,665.04
  5. Step 5: Solve for x
    x = 11,283,665.04/2,878.80
  6. Step 6: Final answer
    x = 3,919.57

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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.