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Finding the Fourth Proportional to 4,779.96, 7,171.16 and 1,859.12

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Solution

The fourth proportional to 4,779.96, 7,171.16 and 1,859.12 is: 2,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.96 : 7,171.16 = 1,859.12 : x
  2. Step 2: Convert to fraction form
    4,779.96/7,171.16 = 1,859.12/x
  3. Step 3: Cross multiply
    4,779.96x = 7,171.16 × 1,859.12
  4. Step 4: Simplify right side
    4,779.96x = 13,332,046.98
  5. Step 5: Solve for x
    x = 13,332,046.98/4,779.96
  6. Step 6: Final answer
    x = 2,789.15

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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.