Home / 3,618.68-5,427.41-1,643.70

Finding the Fourth Proportional to 3,618.68, 5,427.41 and 1,643.70

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Solution

The fourth proportional to 3,618.68, 5,427.41 and 1,643.70 is: 2,465.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.68 : 5,427.41 = 1,643.70 : x
  2. Step 2: Convert to fraction form
    3,618.68/5,427.41 = 1,643.70/x
  3. Step 3: Cross multiply
    3,618.68x = 5,427.41 × 1,643.70
  4. Step 4: Simplify right side
    3,618.68x = 8,921,033.82
  5. Step 5: Solve for x
    x = 8,921,033.82/3,618.68
  6. Step 6: Final answer
    x = 2,465.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.