Home / 3,780.68-5,215.30-2,208.52

Finding the Fourth Proportional to 3,780.68, 5,215.30 and 2,208.52

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Solution

The fourth proportional to 3,780.68, 5,215.30 and 2,208.52 is: 3,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.68 : 5,215.30 = 2,208.52 : x
  2. Step 2: Convert to fraction form
    3,780.68/5,215.30 = 2,208.52/x
  3. Step 3: Cross multiply
    3,780.68x = 5,215.30 × 2,208.52
  4. Step 4: Simplify right side
    3,780.68x = 11,518,094.36
  5. Step 5: Solve for x
    x = 11,518,094.36/3,780.68
  6. Step 6: Final answer
    x = 3,046.57

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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.