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Finding the Fourth Proportional to 8,455.40, 11,662.08 and 6,472.52

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Solution

The fourth proportional to 8,455.40, 11,662.08 and 6,472.52 is: 8,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.40 : 11,662.08 = 6,472.52 : x
  2. Step 2: Convert to fraction form
    8,455.40/11,662.08 = 6,472.52/x
  3. Step 3: Cross multiply
    8,455.40x = 11,662.08 × 6,472.52
  4. Step 4: Simplify right side
    8,455.40x = 75,483,046.04
  5. Step 5: Solve for x
    x = 75,483,046.04/8,455.40
  6. Step 6: Final answer
    x = 8,927.20

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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.