Home / 2,087.14-3,123.80-1,392.16

Finding the Fourth Proportional to 2,087.14, 3,123.80 and 1,392.16

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Solution

The fourth proportional to 2,087.14, 3,123.80 and 1,392.16 is: 2,083.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.14 : 3,123.80 = 1,392.16 : x
  2. Step 2: Convert to fraction form
    2,087.14/3,123.80 = 1,392.16/x
  3. Step 3: Cross multiply
    2,087.14x = 3,123.80 × 1,392.16
  4. Step 4: Simplify right side
    2,087.14x = 4,348,829.41
  5. Step 5: Solve for x
    x = 4,348,829.41/2,087.14
  6. Step 6: Final answer
    x = 2,083.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.