Home / 1,988.24-2,743.96-1,148.68

Finding the Fourth Proportional to 1,988.24, 2,743.96 and 1,148.68

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Solution

The fourth proportional to 1,988.24, 2,743.96 and 1,148.68 is: 1,585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.24 : 2,743.96 = 1,148.68 : x
  2. Step 2: Convert to fraction form
    1,988.24/2,743.96 = 1,148.68/x
  3. Step 3: Cross multiply
    1,988.24x = 2,743.96 × 1,148.68
  4. Step 4: Simplify right side
    1,988.24x = 3,151,918.25
  5. Step 5: Solve for x
    x = 3,151,918.25/1,988.24
  6. Step 6: Final answer
    x = 1,585.28

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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.