Home / 2,087.40-3,131.10-700.95

Finding the Fourth Proportional to 2,087.40, 3,131.10 and 700.95

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Solution

The fourth proportional to 2,087.40, 3,131.10 and 700.95 is: 1,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.40 : 3,131.10 = 700.95 : x
  2. Step 2: Convert to fraction form
    2,087.40/3,131.10 = 700.95/x
  3. Step 3: Cross multiply
    2,087.40x = 3,131.10 × 700.95
  4. Step 4: Simplify right side
    2,087.40x = 2,194,744.55
  5. Step 5: Solve for x
    x = 2,194,744.55/2,087.40
  6. Step 6: Final answer
    x = 1,051.43

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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.