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Finding the Fourth Proportional to 8,601.85, 12,901.63 and 3,916.81

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Solution

The fourth proportional to 8,601.85, 12,901.63 and 3,916.81 is: 5,874.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.85 : 12,901.63 = 3,916.81 : x
  2. Step 2: Convert to fraction form
    8,601.85/12,901.63 = 3,916.81/x
  3. Step 3: Cross multiply
    8,601.85x = 12,901.63 × 3,916.81
  4. Step 4: Simplify right side
    8,601.85x = 50,533,174.51
  5. Step 5: Solve for x
    x = 50,533,174.51/8,601.85
  6. Step 6: Final answer
    x = 5,874.69

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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.