Home / 2,988.59-4,123.49-1,661.99

Finding the Fourth Proportional to 2,988.59, 4,123.49 and 1,661.99

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Solution

The fourth proportional to 2,988.59, 4,123.49 and 1,661.99 is: 2,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.59 : 4,123.49 = 1,661.99 : x
  2. Step 2: Convert to fraction form
    2,988.59/4,123.49 = 1,661.99/x
  3. Step 3: Cross multiply
    2,988.59x = 4,123.49 × 1,661.99
  4. Step 4: Simplify right side
    2,988.59x = 6,853,170.22
  5. Step 5: Solve for x
    x = 6,853,170.22/2,988.59
  6. Step 6: Final answer
    x = 2,293.12

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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.