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Finding the Fourth Proportional to 8,661.97, 11,952.80 and 4,886.07

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Solution

The fourth proportional to 8,661.97, 11,952.80 and 4,886.07 is: 6,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.97 : 11,952.80 = 4,886.07 : x
  2. Step 2: Convert to fraction form
    8,661.97/11,952.80 = 4,886.07/x
  3. Step 3: Cross multiply
    8,661.97x = 11,952.80 × 4,886.07
  4. Step 4: Simplify right side
    8,661.97x = 58,402,217.50
  5. Step 5: Solve for x
    x = 58,402,217.50/8,661.97
  6. Step 6: Final answer
    x = 6,742.37

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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.