Home / 2,691.39-3,712.50-1,628.40

Finding the Fourth Proportional to 2,691.39, 3,712.50 and 1,628.40

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Solution

The fourth proportional to 2,691.39, 3,712.50 and 1,628.40 is: 2,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.39 : 3,712.50 = 1,628.40 : x
  2. Step 2: Convert to fraction form
    2,691.39/3,712.50 = 1,628.40/x
  3. Step 3: Cross multiply
    2,691.39x = 3,712.50 × 1,628.40
  4. Step 4: Simplify right side
    2,691.39x = 6,045,435
  5. Step 5: Solve for x
    x = 6,045,435/2,691.39
  6. Step 6: Final answer
    x = 2,246.21

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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.