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Finding the Fourth Proportional to 5,819.80, 8,728.88 and 3,045.56

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Solution

The fourth proportional to 5,819.80, 8,728.88 and 3,045.56 is: 4,567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.80 : 8,728.88 = 3,045.56 : x
  2. Step 2: Convert to fraction form
    5,819.80/8,728.88 = 3,045.56/x
  3. Step 3: Cross multiply
    5,819.80x = 8,728.88 × 3,045.56
  4. Step 4: Simplify right side
    5,819.80x = 26,584,327.77
  5. Step 5: Solve for x
    x = 26,584,327.77/5,819.80
  6. Step 6: Final answer
    x = 4,567.91

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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.