Home / 2,851.86-4,278.42-1,619.85

Finding the Fourth Proportional to 2,851.86, 4,278.42 and 1,619.85

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Solution

The fourth proportional to 2,851.86, 4,278.42 and 1,619.85 is: 2,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.86 : 4,278.42 = 1,619.85 : x
  2. Step 2: Convert to fraction form
    2,851.86/4,278.42 = 1,619.85/x
  3. Step 3: Cross multiply
    2,851.86x = 4,278.42 × 1,619.85
  4. Step 4: Simplify right side
    2,851.86x = 6,930,398.64
  5. Step 5: Solve for x
    x = 6,930,398.64/2,851.86
  6. Step 6: Final answer
    x = 2,430.13

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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.