Home / 1,988.38-2,976.36-1,368.46

Finding the Fourth Proportional to 1,988.38, 2,976.36 and 1,368.46

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Solution

The fourth proportional to 1,988.38, 2,976.36 and 1,368.46 is: 2,048.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.38 : 2,976.36 = 1,368.46 : x
  2. Step 2: Convert to fraction form
    1,988.38/2,976.36 = 1,368.46/x
  3. Step 3: Cross multiply
    1,988.38x = 2,976.36 × 1,368.46
  4. Step 4: Simplify right side
    1,988.38x = 4,073,029.61
  5. Step 5: Solve for x
    x = 4,073,029.61/1,988.38
  6. Step 6: Final answer
    x = 2,048.42

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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.