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Finding the Fourth Proportional to 8,886.39, 12,258.08 and 5,742.59

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Solution

The fourth proportional to 8,886.39, 12,258.08 and 5,742.59 is: 7,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.39 : 12,258.08 = 5,742.59 : x
  2. Step 2: Convert to fraction form
    8,886.39/12,258.08 = 5,742.59/x
  3. Step 3: Cross multiply
    8,886.39x = 12,258.08 × 5,742.59
  4. Step 4: Simplify right side
    8,886.39x = 70,393,037.62
  5. Step 5: Solve for x
    x = 70,393,037.62/8,886.39
  6. Step 6: Final answer
    x = 7,921.44

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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.