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Finding the Fourth Proportional to 5,742.89, 8,610.45 and 1,993.70

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Solution

The fourth proportional to 5,742.89, 8,610.45 and 1,993.70 is: 2,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,742.89 : 8,610.45 = 1,993.70 : x
  2. Step 2: Convert to fraction form
    5,742.89/8,610.45 = 1,993.70/x
  3. Step 3: Cross multiply
    5,742.89x = 8,610.45 × 1,993.70
  4. Step 4: Simplify right side
    5,742.89x = 17,166,654.17
  5. Step 5: Solve for x
    x = 17,166,654.17/5,742.89
  6. Step 6: Final answer
    x = 2,989.20

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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.