Home / 3,830.47-5,743.40-1,721.72

Finding the Fourth Proportional to 3,830.47, 5,743.40 and 1,721.72

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Solution

The fourth proportional to 3,830.47, 5,743.40 and 1,721.72 is: 2,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.47 : 5,743.40 = 1,721.72 : x
  2. Step 2: Convert to fraction form
    3,830.47/5,743.40 = 1,721.72/x
  3. Step 3: Cross multiply
    3,830.47x = 5,743.40 × 1,721.72
  4. Step 4: Simplify right side
    3,830.47x = 9,888,518.04
  5. Step 5: Solve for x
    x = 9,888,518.04/3,830.47
  6. Step 6: Final answer
    x = 2,581.55

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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.