Home / 1,984.42-2,988.43-1,440.39

Finding the Fourth Proportional to 1,984.42, 2,988.43 and 1,440.39

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Solution

The fourth proportional to 1,984.42, 2,988.43 and 1,440.39 is: 2,169.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.42 : 2,988.43 = 1,440.39 : x
  2. Step 2: Convert to fraction form
    1,984.42/2,988.43 = 1,440.39/x
  3. Step 3: Cross multiply
    1,984.42x = 2,988.43 × 1,440.39
  4. Step 4: Simplify right side
    1,984.42x = 4,304,504.69
  5. Step 5: Solve for x
    x = 4,304,504.69/1,984.42
  6. Step 6: Final answer
    x = 2,169.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.