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Finding the Fourth Proportional to 5,779.15, 8,673.89 and 3,315.74

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Solution

The fourth proportional to 5,779.15, 8,673.89 and 3,315.74 is: 4,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.15 : 8,673.89 = 3,315.74 : x
  2. Step 2: Convert to fraction form
    5,779.15/8,673.89 = 3,315.74/x
  3. Step 3: Cross multiply
    5,779.15x = 8,673.89 × 3,315.74
  4. Step 4: Simplify right side
    5,779.15x = 28,760,304.08
  5. Step 5: Solve for x
    x = 28,760,304.08/5,779.15
  6. Step 6: Final answer
    x = 4,976.57

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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.