Home / 2,679.08-3,695.35-2,118.66

Finding the Fourth Proportional to 2,679.08, 3,695.35 and 2,118.66

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Solution

The fourth proportional to 2,679.08, 3,695.35 and 2,118.66 is: 2,922.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.08 : 3,695.35 = 2,118.66 : x
  2. Step 2: Convert to fraction form
    2,679.08/3,695.35 = 2,118.66/x
  3. Step 3: Cross multiply
    2,679.08x = 3,695.35 × 2,118.66
  4. Step 4: Simplify right side
    2,679.08x = 7,829,169.09
  5. Step 5: Solve for x
    x = 7,829,169.09/2,679.08
  6. Step 6: Final answer
    x = 2,922.34

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1.5x scale

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.