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Finding the Fourth Proportional to 8,602.99, 12,905.76 and 3,055.87

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Solution

The fourth proportional to 8,602.99, 12,905.76 and 3,055.87 is: 4,584.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.99 : 12,905.76 = 3,055.87 : x
  2. Step 2: Convert to fraction form
    8,602.99/12,905.76 = 3,055.87/x
  3. Step 3: Cross multiply
    8,602.99x = 12,905.76 × 3,055.87
  4. Step 4: Simplify right side
    8,602.99x = 39,438,324.81
  5. Step 5: Solve for x
    x = 39,438,324.81/8,602.99
  6. Step 6: Final answer
    x = 4,584.26

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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.