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Finding the Fourth Proportional to 6,555.80, 9,819.30 and 5,691.80

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Solution

The fourth proportional to 6,555.80, 9,819.30 and 5,691.80 is: 8,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,555.80 : 9,819.30 = 5,691.80 : x
  2. Step 2: Convert to fraction form
    6,555.80/9,819.30 = 5,691.80/x
  3. Step 3: Cross multiply
    6,555.80x = 9,819.30 × 5,691.80
  4. Step 4: Simplify right side
    6,555.80x = 55,889,491.74
  5. Step 5: Solve for x
    x = 55,889,491.74/6,555.80
  6. Step 6: Final answer
    x = 8,525.20

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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.