Home / 2,782.28-3,839.22-1,603.40

Finding the Fourth Proportional to 2,782.28, 3,839.22 and 1,603.40

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Solution

The fourth proportional to 2,782.28, 3,839.22 and 1,603.40 is: 2,212.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.28 : 3,839.22 = 1,603.40 : x
  2. Step 2: Convert to fraction form
    2,782.28/3,839.22 = 1,603.40/x
  3. Step 3: Cross multiply
    2,782.28x = 3,839.22 × 1,603.40
  4. Step 4: Simplify right side
    2,782.28x = 6,155,805.35
  5. Step 5: Solve for x
    x = 6,155,805.35/2,782.28
  6. Step 6: Final answer
    x = 2,212.50

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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.