Home / 2,656.39-3,668.47-2,188.92

Finding the Fourth Proportional to 2,656.39, 3,668.47 and 2,188.92

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Solution

The fourth proportional to 2,656.39, 3,668.47 and 2,188.92 is: 3,022.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.39 : 3,668.47 = 2,188.92 : x
  2. Step 2: Convert to fraction form
    2,656.39/3,668.47 = 2,188.92/x
  3. Step 3: Cross multiply
    2,656.39x = 3,668.47 × 2,188.92
  4. Step 4: Simplify right side
    2,656.39x = 8,029,987.35
  5. Step 5: Solve for x
    x = 8,029,987.35/2,656.39
  6. Step 6: Final answer
    x = 3,022.89

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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.