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Finding the Fourth Proportional to 8,886.12, 12,254.94 and 5,739

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Solution

The fourth proportional to 8,886.12, 12,254.94 and 5,739 is: 7,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.12 : 12,254.94 = 5,739 : x
  2. Step 2: Convert to fraction form
    8,886.12/12,254.94 = 5,739/x
  3. Step 3: Cross multiply
    8,886.12x = 12,254.94 × 5,739
  4. Step 4: Simplify right side
    8,886.12x = 70,331,100.66
  5. Step 5: Solve for x
    x = 70,331,100.66/8,886.12
  6. Step 6: Final answer
    x = 7,914.71

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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.