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Finding the Fourth Proportional to 8,453.64, 12,678.04 and 3,258.32

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Solution

The fourth proportional to 8,453.64, 12,678.04 and 3,258.32 is: 4,886.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.64 : 12,678.04 = 3,258.32 : x
  2. Step 2: Convert to fraction form
    8,453.64/12,678.04 = 3,258.32/x
  3. Step 3: Cross multiply
    8,453.64x = 12,678.04 × 3,258.32
  4. Step 4: Simplify right side
    8,453.64x = 41,309,111.29
  5. Step 5: Solve for x
    x = 41,309,111.29/8,453.64
  6. Step 6: Final answer
    x = 4,886.55

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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.