Home / 3,862.16-5,790-1,911.68

Finding the Fourth Proportional to 3,862.16, 5,790 and 1,911.68

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Solution

The fourth proportional to 3,862.16, 5,790 and 1,911.68 is: 2,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.16 : 5,790 = 1,911.68 : x
  2. Step 2: Convert to fraction form
    3,862.16/5,790 = 1,911.68/x
  3. Step 3: Cross multiply
    3,862.16x = 5,790 × 1,911.68
  4. Step 4: Simplify right side
    3,862.16x = 11,068,627.20
  5. Step 5: Solve for x
    x = 11,068,627.20/3,862.16
  6. Step 6: Final answer
    x = 2,865.92

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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.