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Finding the Fourth Proportional to 3,907, 5,390.04 and 2,562.13

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Solution

The fourth proportional to 3,907, 5,390.04 and 2,562.13 is: 3,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907 : 5,390.04 = 2,562.13 : x
  2. Step 2: Convert to fraction form
    3,907/5,390.04 = 2,562.13/x
  3. Step 3: Cross multiply
    3,907x = 5,390.04 × 2,562.13
  4. Step 4: Simplify right side
    3,907x = 13,809,983.19
  5. Step 5: Solve for x
    x = 13,809,983.19/3,907
  6. Step 6: Final answer
    x = 3,534.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.