Home / 2,579.19-3,870.84-936.21

Finding the Fourth Proportional to 2,579.19, 3,870.84 and 936.21

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Solution

The fourth proportional to 2,579.19, 3,870.84 and 936.21 is: 1,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.19 : 3,870.84 = 936.21 : x
  2. Step 2: Convert to fraction form
    2,579.19/3,870.84 = 936.21/x
  3. Step 3: Cross multiply
    2,579.19x = 3,870.84 × 936.21
  4. Step 4: Simplify right side
    2,579.19x = 3,623,919.12
  5. Step 5: Solve for x
    x = 3,623,919.12/2,579.19
  6. Step 6: Final answer
    x = 1,405.06

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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.