Home / 2,862.06-3,949.62-1,603.20

Finding the Fourth Proportional to 2,862.06, 3,949.62 and 1,603.20

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Solution

The fourth proportional to 2,862.06, 3,949.62 and 1,603.20 is: 2,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.06 : 3,949.62 = 1,603.20 : x
  2. Step 2: Convert to fraction form
    2,862.06/3,949.62 = 1,603.20/x
  3. Step 3: Cross multiply
    2,862.06x = 3,949.62 × 1,603.20
  4. Step 4: Simplify right side
    2,862.06x = 6,332,030.78
  5. Step 5: Solve for x
    x = 6,332,030.78/2,862.06
  6. Step 6: Final answer
    x = 2,212.40

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1.5x scale

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.