Home / 4,755.12-7,131.80-1,292.64

Finding the Fourth Proportional to 4,755.12, 7,131.80 and 1,292.64

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Solution

The fourth proportional to 4,755.12, 7,131.80 and 1,292.64 is: 1,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,755.12 : 7,131.80 = 1,292.64 : x
  2. Step 2: Convert to fraction form
    4,755.12/7,131.80 = 1,292.64/x
  3. Step 3: Cross multiply
    4,755.12x = 7,131.80 × 1,292.64
  4. Step 4: Simplify right side
    4,755.12x = 9,218,849.95
  5. Step 5: Solve for x
    x = 9,218,849.95/4,755.12
  6. Step 6: Final answer
    x = 1,938.72

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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.