Home / 4,987.10-6,881.73-2,891

Finding the Fourth Proportional to 4,987.10, 6,881.73 and 2,891

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Solution

The fourth proportional to 4,987.10, 6,881.73 and 2,891 is: 3,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.10 : 6,881.73 = 2,891 : x
  2. Step 2: Convert to fraction form
    4,987.10/6,881.73 = 2,891/x
  3. Step 3: Cross multiply
    4,987.10x = 6,881.73 × 2,891
  4. Step 4: Simplify right side
    4,987.10x = 19,895,081.43
  5. Step 5: Solve for x
    x = 19,895,081.43/4,987.10
  6. Step 6: Final answer
    x = 3,989.31

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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.