Home / 3,780.40-5,216.88-2,208.46

Finding the Fourth Proportional to 3,780.40, 5,216.88 and 2,208.46

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Solution

The fourth proportional to 3,780.40, 5,216.88 and 2,208.46 is: 3,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.40 : 5,216.88 = 2,208.46 : x
  2. Step 2: Convert to fraction form
    3,780.40/5,216.88 = 2,208.46/x
  3. Step 3: Cross multiply
    3,780.40x = 5,216.88 × 2,208.46
  4. Step 4: Simplify right side
    3,780.40x = 11,521,270.80
  5. Step 5: Solve for x
    x = 11,521,270.80/3,780.40
  6. Step 6: Final answer
    x = 3,047.63

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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.