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Finding the Fourth Proportional to 8,696.66, 12,000.66 and 4,919.63

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Solution

The fourth proportional to 8,696.66, 12,000.66 and 4,919.63 is: 6,788.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.66 : 12,000.66 = 4,919.63 : x
  2. Step 2: Convert to fraction form
    8,696.66/12,000.66 = 4,919.63/x
  3. Step 3: Cross multiply
    8,696.66x = 12,000.66 × 4,919.63
  4. Step 4: Simplify right side
    8,696.66x = 59,038,806.96
  5. Step 5: Solve for x
    x = 59,038,806.96/8,696.66
  6. Step 6: Final answer
    x = 6,788.68

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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.