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Finding the Fourth Proportional to 8,636.41, 12,958.26 and 4,258.77

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Solution

The fourth proportional to 8,636.41, 12,958.26 and 4,258.77 is: 6,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.41 : 12,958.26 = 4,258.77 : x
  2. Step 2: Convert to fraction form
    8,636.41/12,958.26 = 4,258.77/x
  3. Step 3: Cross multiply
    8,636.41x = 12,958.26 × 4,258.77
  4. Step 4: Simplify right side
    8,636.41x = 55,186,248.94
  5. Step 5: Solve for x
    x = 55,186,248.94/8,636.41
  6. Step 6: Final answer
    x = 6,389.95

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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.