Home / 1,988.14-2,982.70-1,404.28

Finding the Fourth Proportional to 1,988.14, 2,982.70 and 1,404.28

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Solution

The fourth proportional to 1,988.14, 2,982.70 and 1,404.28 is: 2,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.14 : 2,982.70 = 1,404.28 : x
  2. Step 2: Convert to fraction form
    1,988.14/2,982.70 = 1,404.28/x
  3. Step 3: Cross multiply
    1,988.14x = 2,982.70 × 1,404.28
  4. Step 4: Simplify right side
    1,988.14x = 4,188,538.93
  5. Step 5: Solve for x
    x = 4,188,538.93/1,988.14
  6. Step 6: Final answer
    x = 2,106.76

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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.