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Finding the Fourth Proportional to 8,682.39, 11,955.60 and 7,848.90

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Solution

The fourth proportional to 8,682.39, 11,955.60 and 7,848.90 is: 10,807.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.39 : 11,955.60 = 7,848.90 : x
  2. Step 2: Convert to fraction form
    8,682.39/11,955.60 = 7,848.90/x
  3. Step 3: Cross multiply
    8,682.39x = 11,955.60 × 7,848.90
  4. Step 4: Simplify right side
    8,682.39x = 93,838,308.84
  5. Step 5: Solve for x
    x = 93,838,308.84/8,682.39
  6. Step 6: Final answer
    x = 10,807.89

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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.