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Finding the Fourth Proportional to 5,779.76, 8,675.04 and 3,179.12

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Solution

The fourth proportional to 5,779.76, 8,675.04 and 3,179.12 is: 4,771.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.76 : 8,675.04 = 3,179.12 : x
  2. Step 2: Convert to fraction form
    5,779.76/8,675.04 = 3,179.12/x
  3. Step 3: Cross multiply
    5,779.76x = 8,675.04 × 3,179.12
  4. Step 4: Simplify right side
    5,779.76x = 27,578,993.16
  5. Step 5: Solve for x
    x = 27,578,993.16/5,779.76
  6. Step 6: Final answer
    x = 4,771.65

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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.