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Finding the Fourth Proportional to 8,541.99, 12,807.81 and 4,155.03

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Solution

The fourth proportional to 8,541.99, 12,807.81 and 4,155.03 is: 6,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.99 : 12,807.81 = 4,155.03 : x
  2. Step 2: Convert to fraction form
    8,541.99/12,807.81 = 4,155.03/x
  3. Step 3: Cross multiply
    8,541.99x = 12,807.81 × 4,155.03
  4. Step 4: Simplify right side
    8,541.99x = 53,216,834.78
  5. Step 5: Solve for x
    x = 53,216,834.78/8,541.99
  6. Step 6: Final answer
    x = 6,230.03

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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.