Home / 2,790.22-4,185.20-710.28

Finding the Fourth Proportional to 2,790.22, 4,185.20 and 710.28

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Solution

The fourth proportional to 2,790.22, 4,185.20 and 710.28 is: 1,065.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.22 : 4,185.20 = 710.28 : x
  2. Step 2: Convert to fraction form
    2,790.22/4,185.20 = 710.28/x
  3. Step 3: Cross multiply
    2,790.22x = 4,185.20 × 710.28
  4. Step 4: Simplify right side
    2,790.22x = 2,972,663.86
  5. Step 5: Solve for x
    x = 2,972,663.86/2,790.22
  6. Step 6: Final answer
    x = 1,065.39

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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.