Home / 3,619.08-4,993.56-2,780.70

Finding the Fourth Proportional to 3,619.08, 4,993.56 and 2,780.70

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Solution

The fourth proportional to 3,619.08, 4,993.56 and 2,780.70 is: 3,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.08 : 4,993.56 = 2,780.70 : x
  2. Step 2: Convert to fraction form
    3,619.08/4,993.56 = 2,780.70/x
  3. Step 3: Cross multiply
    3,619.08x = 4,993.56 × 2,780.70
  4. Step 4: Simplify right side
    3,619.08x = 13,885,592.29
  5. Step 5: Solve for x
    x = 13,885,592.29/3,619.08
  6. Step 6: Final answer
    x = 3,836.77

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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.