Home / 2,809.02-3,876.75-1,761.42

Finding the Fourth Proportional to 2,809.02, 3,876.75 and 1,761.42

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Solution

The fourth proportional to 2,809.02, 3,876.75 and 1,761.42 is: 2,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.02 : 3,876.75 = 1,761.42 : x
  2. Step 2: Convert to fraction form
    2,809.02/3,876.75 = 1,761.42/x
  3. Step 3: Cross multiply
    2,809.02x = 3,876.75 × 1,761.42
  4. Step 4: Simplify right side
    2,809.02x = 6,828,584.99
  5. Step 5: Solve for x
    x = 6,828,584.99/2,809.02
  6. Step 6: Final answer
    x = 2,430.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.