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Finding the Fourth Proportional to 5,581.80, 8,358.30 and 4,429.80

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Solution

The fourth proportional to 5,581.80, 8,358.30 and 4,429.80 is: 6,633.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.80 : 8,358.30 = 4,429.80 : x
  2. Step 2: Convert to fraction form
    5,581.80/8,358.30 = 4,429.80/x
  3. Step 3: Cross multiply
    5,581.80x = 8,358.30 × 4,429.80
  4. Step 4: Simplify right side
    5,581.80x = 37,025,597.34
  5. Step 5: Solve for x
    x = 37,025,597.34/5,581.80
  6. Step 6: Final answer
    x = 6,633.27

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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.