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Finding the Fourth Proportional to 8,617.49, 12,918.01 and 2,770

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Solution

The fourth proportional to 8,617.49, 12,918.01 and 2,770 is: 4,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.49 : 12,918.01 = 2,770 : x
  2. Step 2: Convert to fraction form
    8,617.49/12,918.01 = 2,770/x
  3. Step 3: Cross multiply
    8,617.49x = 12,918.01 × 2,770
  4. Step 4: Simplify right side
    8,617.49x = 35,782,887.70
  5. Step 5: Solve for x
    x = 35,782,887.70/8,617.49
  6. Step 6: Final answer
    x = 4,152.36

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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.