Home / 2,310.13-3,187.98-1,378.63

Finding the Fourth Proportional to 2,310.13, 3,187.98 and 1,378.63

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Solution

The fourth proportional to 2,310.13, 3,187.98 and 1,378.63 is: 1,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.13 : 3,187.98 = 1,378.63 : x
  2. Step 2: Convert to fraction form
    2,310.13/3,187.98 = 1,378.63/x
  3. Step 3: Cross multiply
    2,310.13x = 3,187.98 × 1,378.63
  4. Step 4: Simplify right side
    2,310.13x = 4,395,022.03
  5. Step 5: Solve for x
    x = 4,395,022.03/2,310.13
  6. Step 6: Final answer
    x = 1,902.50

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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.