Home / 3,977.38-5,488.95-2,209

Finding the Fourth Proportional to 3,977.38, 5,488.95 and 2,209

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Solution

The fourth proportional to 3,977.38, 5,488.95 and 2,209 is: 3,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.38 : 5,488.95 = 2,209 : x
  2. Step 2: Convert to fraction form
    3,977.38/5,488.95 = 2,209/x
  3. Step 3: Cross multiply
    3,977.38x = 5,488.95 × 2,209
  4. Step 4: Simplify right side
    3,977.38x = 12,125,090.55
  5. Step 5: Solve for x
    x = 12,125,090.55/3,977.38
  6. Step 6: Final answer
    x = 3,048.51

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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.