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Finding the Fourth Proportional to 8,802.78, 13,206.87 and 2,958.90

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Solution

The fourth proportional to 8,802.78, 13,206.87 and 2,958.90 is: 4,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.78 : 13,206.87 = 2,958.90 : x
  2. Step 2: Convert to fraction form
    8,802.78/13,206.87 = 2,958.90/x
  3. Step 3: Cross multiply
    8,802.78x = 13,206.87 × 2,958.90
  4. Step 4: Simplify right side
    8,802.78x = 39,077,807.64
  5. Step 5: Solve for x
    x = 39,077,807.64/8,802.78
  6. Step 6: Final answer
    x = 4,439.26

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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.