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Finding the Fourth Proportional to 6,391.10, 8,819.01 and 3,558.03

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Solution

The fourth proportional to 6,391.10, 8,819.01 and 3,558.03 is: 4,909.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.10 : 8,819.01 = 3,558.03 : x
  2. Step 2: Convert to fraction form
    6,391.10/8,819.01 = 3,558.03/x
  3. Step 3: Cross multiply
    6,391.10x = 8,819.01 × 3,558.03
  4. Step 4: Simplify right side
    6,391.10x = 31,378,302.15
  5. Step 5: Solve for x
    x = 31,378,302.15/6,391.10
  6. Step 6: Final answer
    x = 4,909.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.