Home / 2,782.26-3,839.76-1,603.71

Finding the Fourth Proportional to 2,782.26, 3,839.76 and 1,603.71

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Solution

The fourth proportional to 2,782.26, 3,839.76 and 1,603.71 is: 2,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.26 : 3,839.76 = 1,603.71 : x
  2. Step 2: Convert to fraction form
    2,782.26/3,839.76 = 1,603.71/x
  3. Step 3: Cross multiply
    2,782.26x = 3,839.76 × 1,603.71
  4. Step 4: Simplify right side
    2,782.26x = 6,157,861.51
  5. Step 5: Solve for x
    x = 6,157,861.51/2,782.26
  6. Step 6: Final answer
    x = 2,213.26

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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.