Home / 3,412.14-5,118.13-946.90

Finding the Fourth Proportional to 3,412.14, 5,118.13 and 946.90

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Solution

The fourth proportional to 3,412.14, 5,118.13 and 946.90 is: 1,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.14 : 5,118.13 = 946.90 : x
  2. Step 2: Convert to fraction form
    3,412.14/5,118.13 = 946.90/x
  3. Step 3: Cross multiply
    3,412.14x = 5,118.13 × 946.90
  4. Step 4: Simplify right side
    3,412.14x = 4,846,357.30
  5. Step 5: Solve for x
    x = 4,846,357.30/3,412.14
  6. Step 6: Final answer
    x = 1,420.33

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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.