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Finding the Fourth Proportional to 8,668.35, 11,962.31 and 4,689.45

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Solution

The fourth proportional to 8,668.35, 11,962.31 and 4,689.45 is: 6,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.35 : 11,962.31 = 4,689.45 : x
  2. Step 2: Convert to fraction form
    8,668.35/11,962.31 = 4,689.45/x
  3. Step 3: Cross multiply
    8,668.35x = 11,962.31 × 4,689.45
  4. Step 4: Simplify right side
    8,668.35x = 56,096,631.18
  5. Step 5: Solve for x
    x = 56,096,631.18/8,668.35
  6. Step 6: Final answer
    x = 6,471.43

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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.