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Finding the Fourth Proportional to 5,779.61, 7,979.78 and 3,793.55

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Solution

The fourth proportional to 5,779.61, 7,979.78 and 3,793.55 is: 5,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.61 : 7,979.78 = 3,793.55 : x
  2. Step 2: Convert to fraction form
    5,779.61/7,979.78 = 3,793.55/x
  3. Step 3: Cross multiply
    5,779.61x = 7,979.78 × 3,793.55
  4. Step 4: Simplify right side
    5,779.61x = 30,271,635.55
  5. Step 5: Solve for x
    x = 30,271,635.55/5,779.61
  6. Step 6: Final answer
    x = 5,237.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.