Home / 2,187.56-3,031.31-2,160.84

Finding the Fourth Proportional to 2,187.56, 3,031.31 and 2,160.84

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Solution

The fourth proportional to 2,187.56, 3,031.31 and 2,160.84 is: 2,994.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.56 : 3,031.31 = 2,160.84 : x
  2. Step 2: Convert to fraction form
    2,187.56/3,031.31 = 2,160.84/x
  3. Step 3: Cross multiply
    2,187.56x = 3,031.31 × 2,160.84
  4. Step 4: Simplify right side
    2,187.56x = 6,550,175.90
  5. Step 5: Solve for x
    x = 6,550,175.90/2,187.56
  6. Step 6: Final answer
    x = 2,994.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.