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Finding the Fourth Proportional to 2,878.56, 3,971.57 and 1,759.68

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Solution

The fourth proportional to 2,878.56, 3,971.57 and 1,759.68 is: 2,427.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.56 : 3,971.57 = 1,759.68 : x
  2. Step 2: Convert to fraction form
    2,878.56/3,971.57 = 1,759.68/x
  3. Step 3: Cross multiply
    2,878.56x = 3,971.57 × 1,759.68
  4. Step 4: Simplify right side
    2,878.56x = 6,988,683.50
  5. Step 5: Solve for x
    x = 6,988,683.50/2,878.56
  6. Step 6: Final answer
    x = 2,427.84

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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.