Home / 1,643.38-2,267.70-935.02

Finding the Fourth Proportional to 1,643.38, 2,267.70 and 935.02

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Solution

The fourth proportional to 1,643.38, 2,267.70 and 935.02 is: 1,290.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.38 : 2,267.70 = 935.02 : x
  2. Step 2: Convert to fraction form
    1,643.38/2,267.70 = 935.02/x
  3. Step 3: Cross multiply
    1,643.38x = 2,267.70 × 935.02
  4. Step 4: Simplify right side
    1,643.38x = 2,120,344.85
  5. Step 5: Solve for x
    x = 2,120,344.85/1,643.38
  6. Step 6: Final answer
    x = 1,290.23

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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.