Home / 3,781.80-5,669.64-1,440.36

Finding the Fourth Proportional to 3,781.80, 5,669.64 and 1,440.36

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Solution

The fourth proportional to 3,781.80, 5,669.64 and 1,440.36 is: 2,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.80 : 5,669.64 = 1,440.36 : x
  2. Step 2: Convert to fraction form
    3,781.80/5,669.64 = 1,440.36/x
  3. Step 3: Cross multiply
    3,781.80x = 5,669.64 × 1,440.36
  4. Step 4: Simplify right side
    3,781.80x = 8,166,322.67
  5. Step 5: Solve for x
    x = 8,166,322.67/3,781.80
  6. Step 6: Final answer
    x = 2,159.37

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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.