Home / 1,643.30-2,267.55-935.24

Finding the Fourth Proportional to 1,643.30, 2,267.55 and 935.24

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Solution

The fourth proportional to 1,643.30, 2,267.55 and 935.24 is: 1,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.30 : 2,267.55 = 935.24 : x
  2. Step 2: Convert to fraction form
    1,643.30/2,267.55 = 935.24/x
  3. Step 3: Cross multiply
    1,643.30x = 2,267.55 × 935.24
  4. Step 4: Simplify right side
    1,643.30x = 2,120,692.12
  5. Step 5: Solve for x
    x = 2,120,692.12/1,643.30
  6. Step 6: Final answer
    x = 1,290.51

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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.