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Finding the Fourth Proportional to 6,530.60, 9,785.10 and 5,558.60

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Solution

The fourth proportional to 6,530.60, 9,785.10 and 5,558.60 is: 8,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,530.60 : 9,785.10 = 5,558.60 : x
  2. Step 2: Convert to fraction form
    6,530.60/9,785.10 = 5,558.60/x
  3. Step 3: Cross multiply
    6,530.60x = 9,785.10 × 5,558.60
  4. Step 4: Simplify right side
    6,530.60x = 54,391,456.86
  5. Step 5: Solve for x
    x = 54,391,456.86/6,530.60
  6. Step 6: Final answer
    x = 8,328.71

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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.