Home / 4,755.15-7,130.97-2,781.45

Finding the Fourth Proportional to 4,755.15, 7,130.97 and 2,781.45

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Solution

The fourth proportional to 4,755.15, 7,130.97 and 2,781.45 is: 4,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,755.15 : 7,130.97 = 2,781.45 : x
  2. Step 2: Convert to fraction form
    4,755.15/7,130.97 = 2,781.45/x
  3. Step 3: Cross multiply
    4,755.15x = 7,130.97 × 2,781.45
  4. Step 4: Simplify right side
    4,755.15x = 19,834,436.51
  5. Step 5: Solve for x
    x = 19,834,436.51/4,755.15
  6. Step 6: Final answer
    x = 4,171.15

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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.