Home / 2,988.84-4,123.92-1,809.66

Finding the Fourth Proportional to 2,988.84, 4,123.92 and 1,809.66

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Solution

The fourth proportional to 2,988.84, 4,123.92 and 1,809.66 is: 2,496.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.84 : 4,123.92 = 1,809.66 : x
  2. Step 2: Convert to fraction form
    2,988.84/4,123.92 = 1,809.66/x
  3. Step 3: Cross multiply
    2,988.84x = 4,123.92 × 1,809.66
  4. Step 4: Simplify right side
    2,988.84x = 7,462,893.07
  5. Step 5: Solve for x
    x = 7,462,893.07/2,988.84
  6. Step 6: Final answer
    x = 2,496.92

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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.