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Finding the Fourth Proportional to 7,907, 11,862.16 and 2,713.28

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Solution

The fourth proportional to 7,907, 11,862.16 and 2,713.28 is: 4,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907 : 11,862.16 = 2,713.28 : x
  2. Step 2: Convert to fraction form
    7,907/11,862.16 = 2,713.28/x
  3. Step 3: Cross multiply
    7,907x = 11,862.16 × 2,713.28
  4. Step 4: Simplify right side
    7,907x = 32,185,361.48
  5. Step 5: Solve for x
    x = 32,185,361.48/7,907
  6. Step 6: Final answer
    x = 4,070.49

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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.