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Finding the Fourth Proportional to 2,765.98, 4,149.12 and 1,798.22

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Solution

The fourth proportional to 2,765.98, 4,149.12 and 1,798.22 is: 2,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.98 : 4,149.12 = 1,798.22 : x
  2. Step 2: Convert to fraction form
    2,765.98/4,149.12 = 1,798.22/x
  3. Step 3: Cross multiply
    2,765.98x = 4,149.12 × 1,798.22
  4. Step 4: Simplify right side
    2,765.98x = 7,461,030.57
  5. Step 5: Solve for x
    x = 7,461,030.57/2,765.98
  6. Step 6: Final answer
    x = 2,697.43

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Double scale
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Similar ratio
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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.