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Finding the Fourth Proportional to 5,165.75, 7,749.12 and 1,654.86

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Solution

The fourth proportional to 5,165.75, 7,749.12 and 1,654.86 is: 2,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.75 : 7,749.12 = 1,654.86 : x
  2. Step 2: Convert to fraction form
    5,165.75/7,749.12 = 1,654.86/x
  3. Step 3: Cross multiply
    5,165.75x = 7,749.12 × 1,654.86
  4. Step 4: Simplify right side
    5,165.75x = 12,823,708.72
  5. Step 5: Solve for x
    x = 12,823,708.72/5,165.75
  6. Step 6: Final answer
    x = 2,482.45

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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.