Home / 2,682.06-3,702.15-1,689

Finding the Fourth Proportional to 2,682.06, 3,702.15 and 1,689

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Solution

The fourth proportional to 2,682.06, 3,702.15 and 1,689 is: 2,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.06 : 3,702.15 = 1,689 : x
  2. Step 2: Convert to fraction form
    2,682.06/3,702.15 = 1,689/x
  3. Step 3: Cross multiply
    2,682.06x = 3,702.15 × 1,689
  4. Step 4: Simplify right side
    2,682.06x = 6,252,931.35
  5. Step 5: Solve for x
    x = 6,252,931.35/2,682.06
  6. Step 6: Final answer
    x = 2,331.39

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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.