Home / 4,643.49-6,405.42-2,874.78

Finding the Fourth Proportional to 4,643.49, 6,405.42 and 2,874.78

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Solution

The fourth proportional to 4,643.49, 6,405.42 and 2,874.78 is: 3,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,643.49 : 6,405.42 = 2,874.78 : x
  2. Step 2: Convert to fraction form
    4,643.49/6,405.42 = 2,874.78/x
  3. Step 3: Cross multiply
    4,643.49x = 6,405.42 × 2,874.78
  4. Step 4: Simplify right side
    4,643.49x = 18,414,173.31
  5. Step 5: Solve for x
    x = 18,414,173.31/4,643.49
  6. Step 6: Final answer
    x = 3,965.59

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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.