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Finding the Fourth Proportional to 5,731.80, 8,585.55 and 4,759.80

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Solution

The fourth proportional to 5,731.80, 8,585.55 and 4,759.80 is: 7,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,731.80 : 8,585.55 = 4,759.80 : x
  2. Step 2: Convert to fraction form
    5,731.80/8,585.55 = 4,759.80/x
  3. Step 3: Cross multiply
    5,731.80x = 8,585.55 × 4,759.80
  4. Step 4: Simplify right side
    5,731.80x = 40,865,500.89
  5. Step 5: Solve for x
    x = 40,865,500.89/5,731.80
  6. Step 6: Final answer
    x = 7,129.61

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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.