Home / 2,986.74-4,120.65-1,792.11

Finding the Fourth Proportional to 2,986.74, 4,120.65 and 1,792.11

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Solution

The fourth proportional to 2,986.74, 4,120.65 and 1,792.11 is: 2,472.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.74 : 4,120.65 = 1,792.11 : x
  2. Step 2: Convert to fraction form
    2,986.74/4,120.65 = 1,792.11/x
  3. Step 3: Cross multiply
    2,986.74x = 4,120.65 × 1,792.11
  4. Step 4: Simplify right side
    2,986.74x = 7,384,658.07
  5. Step 5: Solve for x
    x = 7,384,658.07/2,986.74
  6. Step 6: Final answer
    x = 2,472.48

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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.