Home / 3,878.47-5,352.31-2,110.07

Finding the Fourth Proportional to 3,878.47, 5,352.31 and 2,110.07

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Solution

The fourth proportional to 3,878.47, 5,352.31 and 2,110.07 is: 2,911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.47 : 5,352.31 = 2,110.07 : x
  2. Step 2: Convert to fraction form
    3,878.47/5,352.31 = 2,110.07/x
  3. Step 3: Cross multiply
    3,878.47x = 5,352.31 × 2,110.07
  4. Step 4: Simplify right side
    3,878.47x = 11,293,748.76
  5. Step 5: Solve for x
    x = 11,293,748.76/3,878.47
  6. Step 6: Final answer
    x = 2,911.91

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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.