Home / 2,800.69-4,202.92-1,157.20

Finding the Fourth Proportional to 2,800.69, 4,202.92 and 1,157.20

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Solution

The fourth proportional to 2,800.69, 4,202.92 and 1,157.20 is: 1,736.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.69 : 4,202.92 = 1,157.20 : x
  2. Step 2: Convert to fraction form
    2,800.69/4,202.92 = 1,157.20/x
  3. Step 3: Cross multiply
    2,800.69x = 4,202.92 × 1,157.20
  4. Step 4: Simplify right side
    2,800.69x = 4,863,619.02
  5. Step 5: Solve for x
    x = 4,863,619.02/2,800.69
  6. Step 6: Final answer
    x = 1,736.58

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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.