Home / 4,728.78-7,090.76-2,755.04

Finding the Fourth Proportional to 4,728.78, 7,090.76 and 2,755.04

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Solution

The fourth proportional to 4,728.78, 7,090.76 and 2,755.04 is: 4,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,728.78 : 7,090.76 = 2,755.04 : x
  2. Step 2: Convert to fraction form
    4,728.78/7,090.76 = 2,755.04/x
  3. Step 3: Cross multiply
    4,728.78x = 7,090.76 × 2,755.04
  4. Step 4: Simplify right side
    4,728.78x = 19,535,298.86
  5. Step 5: Solve for x
    x = 19,535,298.86/4,728.78
  6. Step 6: Final answer
    x = 4,131.15

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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.