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Finding the Fourth Proportional to 8,685.88, 13,046.28 and 5,182.73

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Solution

The fourth proportional to 8,685.88, 13,046.28 and 5,182.73 is: 7,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.88 : 13,046.28 = 5,182.73 : x
  2. Step 2: Convert to fraction form
    8,685.88/13,046.28 = 5,182.73/x
  3. Step 3: Cross multiply
    8,685.88x = 13,046.28 × 5,182.73
  4. Step 4: Simplify right side
    8,685.88x = 67,615,281.51
  5. Step 5: Solve for x
    x = 67,615,281.51/8,685.88
  6. Step 6: Final answer
    x = 7,784.51

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Double scale
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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.