Home / 2,988.32-4,123.70-1,661.98

Finding the Fourth Proportional to 2,988.32, 4,123.70 and 1,661.98

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Solution

The fourth proportional to 2,988.32, 4,123.70 and 1,661.98 is: 2,293.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.32 : 4,123.70 = 1,661.98 : x
  2. Step 2: Convert to fraction form
    2,988.32/4,123.70 = 1,661.98/x
  3. Step 3: Cross multiply
    2,988.32x = 4,123.70 × 1,661.98
  4. Step 4: Simplify right side
    2,988.32x = 6,853,506.93
  5. Step 5: Solve for x
    x = 6,853,506.93/2,988.32
  6. Step 6: Final answer
    x = 2,293.43

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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.