Home / 3,290.45-4,538.69-1,963.13

Finding the Fourth Proportional to 3,290.45, 4,538.69 and 1,963.13

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Solution

The fourth proportional to 3,290.45, 4,538.69 and 1,963.13 is: 2,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.45 : 4,538.69 = 1,963.13 : x
  2. Step 2: Convert to fraction form
    3,290.45/4,538.69 = 1,963.13/x
  3. Step 3: Cross multiply
    3,290.45x = 4,538.69 × 1,963.13
  4. Step 4: Simplify right side
    3,290.45x = 8,910,020.71
  5. Step 5: Solve for x
    x = 8,910,020.71/3,290.45
  6. Step 6: Final answer
    x = 2,707.85

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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.