Home / 2,988.09-4,123.68-1,808.49

Finding the Fourth Proportional to 2,988.09, 4,123.68 and 1,808.49

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Solution

The fourth proportional to 2,988.09, 4,123.68 and 1,808.49 is: 2,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.09 : 4,123.68 = 1,808.49 : x
  2. Step 2: Convert to fraction form
    2,988.09/4,123.68 = 1,808.49/x
  3. Step 3: Cross multiply
    2,988.09x = 4,123.68 × 1,808.49
  4. Step 4: Simplify right side
    2,988.09x = 7,457,634.04
  5. Step 5: Solve for x
    x = 7,457,634.04/2,988.09
  6. Step 6: Final answer
    x = 2,495.79

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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.