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Finding the Fourth Proportional to 2,798.61, 4,198.74 and 1,155.25

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Solution

The fourth proportional to 2,798.61, 4,198.74 and 1,155.25 is: 1,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.61 : 4,198.74 = 1,155.25 : x
  2. Step 2: Convert to fraction form
    2,798.61/4,198.74 = 1,155.25/x
  3. Step 3: Cross multiply
    2,798.61x = 4,198.74 × 1,155.25
  4. Step 4: Simplify right side
    2,798.61x = 4,850,594.39
  5. Step 5: Solve for x
    x = 4,850,594.39/2,798.61
  6. Step 6: Final answer
    x = 1,733.22

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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.