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Finding the Fourth Proportional to 8,602.81, 12,899.96 and 3,055.32

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Solution

The fourth proportional to 8,602.81, 12,899.96 and 3,055.32 is: 4,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.81 : 12,899.96 = 3,055.32 : x
  2. Step 2: Convert to fraction form
    8,602.81/12,899.96 = 3,055.32/x
  3. Step 3: Cross multiply
    8,602.81x = 12,899.96 × 3,055.32
  4. Step 4: Simplify right side
    8,602.81x = 39,413,501.97
  5. Step 5: Solve for x
    x = 39,413,501.97/8,602.81
  6. Step 6: Final answer
    x = 4,581.47

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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.