Home / 2,780.50-4,164.32-1,995.60

Finding the Fourth Proportional to 2,780.50, 4,164.32 and 1,995.60

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Solution

The fourth proportional to 2,780.50, 4,164.32 and 1,995.60 is: 2,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.50 : 4,164.32 = 1,995.60 : x
  2. Step 2: Convert to fraction form
    2,780.50/4,164.32 = 1,995.60/x
  3. Step 3: Cross multiply
    2,780.50x = 4,164.32 × 1,995.60
  4. Step 4: Simplify right side
    2,780.50x = 8,310,316.99
  5. Step 5: Solve for x
    x = 8,310,316.99/2,780.50
  6. Step 6: Final answer
    x = 2,988.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.