Home / 2,639.62-3,643.01-1,520.37

Finding the Fourth Proportional to 2,639.62, 3,643.01 and 1,520.37

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Solution

The fourth proportional to 2,639.62, 3,643.01 and 1,520.37 is: 2,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.62 : 3,643.01 = 1,520.37 : x
  2. Step 2: Convert to fraction form
    2,639.62/3,643.01 = 1,520.37/x
  3. Step 3: Cross multiply
    2,639.62x = 3,643.01 × 1,520.37
  4. Step 4: Simplify right side
    2,639.62x = 5,538,723.11
  5. Step 5: Solve for x
    x = 5,538,723.11/2,639.62
  6. Step 6: Final answer
    x = 2,098.30

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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.