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Finding the Fourth Proportional to 6,367.67, 8,785.59 and 4,129.64

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Solution

The fourth proportional to 6,367.67, 8,785.59 and 4,129.64 is: 5,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,367.67 : 8,785.59 = 4,129.64 : x
  2. Step 2: Convert to fraction form
    6,367.67/8,785.59 = 4,129.64/x
  3. Step 3: Cross multiply
    6,367.67x = 8,785.59 × 4,129.64
  4. Step 4: Simplify right side
    6,367.67x = 36,281,323.89
  5. Step 5: Solve for x
    x = 36,281,323.89/6,367.67
  6. Step 6: Final answer
    x = 5,697.74

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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.