Home / 3,788.60-5,228.28-2,109.92

Finding the Fourth Proportional to 3,788.60, 5,228.28 and 2,109.92

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Solution

The fourth proportional to 3,788.60, 5,228.28 and 2,109.92 is: 2,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.60 : 5,228.28 = 2,109.92 : x
  2. Step 2: Convert to fraction form
    3,788.60/5,228.28 = 2,109.92/x
  3. Step 3: Cross multiply
    3,788.60x = 5,228.28 × 2,109.92
  4. Step 4: Simplify right side
    3,788.60x = 11,031,252.54
  5. Step 5: Solve for x
    x = 11,031,252.54/3,788.60
  6. Step 6: Final answer
    x = 2,911.70

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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.