Home / 2,772.22-4,155.56-1,129.72

Finding the Fourth Proportional to 2,772.22, 4,155.56 and 1,129.72

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Solution

The fourth proportional to 2,772.22, 4,155.56 and 1,129.72 is: 1,693.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.22 : 4,155.56 = 1,129.72 : x
  2. Step 2: Convert to fraction form
    2,772.22/4,155.56 = 1,129.72/x
  3. Step 3: Cross multiply
    2,772.22x = 4,155.56 × 1,129.72
  4. Step 4: Simplify right side
    2,772.22x = 4,694,619.24
  5. Step 5: Solve for x
    x = 4,694,619.24/2,772.22
  6. Step 6: Final answer
    x = 1,693.45

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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.