Home / 2,782.05-3,839.19-1,603.50

Finding the Fourth Proportional to 2,782.05, 3,839.19 and 1,603.50

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Solution

The fourth proportional to 2,782.05, 3,839.19 and 1,603.50 is: 2,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.05 : 3,839.19 = 1,603.50 : x
  2. Step 2: Convert to fraction form
    2,782.05/3,839.19 = 1,603.50/x
  3. Step 3: Cross multiply
    2,782.05x = 3,839.19 × 1,603.50
  4. Step 4: Simplify right side
    2,782.05x = 6,156,141.17
  5. Step 5: Solve for x
    x = 6,156,141.17/2,782.05
  6. Step 6: Final answer
    x = 2,212.81

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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.