Home / 1,988.39-2,743.84-1,192.16

Finding the Fourth Proportional to 1,988.39, 2,743.84 and 1,192.16

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Solution

The fourth proportional to 1,988.39, 2,743.84 and 1,192.16 is: 1,645.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.39 : 2,743.84 = 1,192.16 : x
  2. Step 2: Convert to fraction form
    1,988.39/2,743.84 = 1,192.16/x
  3. Step 3: Cross multiply
    1,988.39x = 2,743.84 × 1,192.16
  4. Step 4: Simplify right side
    1,988.39x = 3,271,096.29
  5. Step 5: Solve for x
    x = 3,271,096.29/1,988.39
  6. Step 6: Final answer
    x = 1,645.10

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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.