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Finding the Fourth Proportional to 6,369.60, 8,789.88 and 3,536.90

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Solution

The fourth proportional to 6,369.60, 8,789.88 and 3,536.90 is: 4,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,369.60 : 8,789.88 = 3,536.90 : x
  2. Step 2: Convert to fraction form
    6,369.60/8,789.88 = 3,536.90/x
  3. Step 3: Cross multiply
    6,369.60x = 8,789.88 × 3,536.90
  4. Step 4: Simplify right side
    6,369.60x = 31,088,886.91
  5. Step 5: Solve for x
    x = 31,088,886.91/6,369.60
  6. Step 6: Final answer
    x = 4,880.82

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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.