Home / 2,878.75-3,972.96-1,884.57

Finding the Fourth Proportional to 2,878.75, 3,972.96 and 1,884.57

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Solution

The fourth proportional to 2,878.75, 3,972.96 and 1,884.57 is: 2,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.75 : 3,972.96 = 1,884.57 : x
  2. Step 2: Convert to fraction form
    2,878.75/3,972.96 = 1,884.57/x
  3. Step 3: Cross multiply
    2,878.75x = 3,972.96 × 1,884.57
  4. Step 4: Simplify right side
    2,878.75x = 7,487,321.23
  5. Step 5: Solve for x
    x = 7,487,321.23/2,878.75
  6. Step 6: Final answer
    x = 2,600.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.