Home / 3,109.51-4,664.27-2,919.43

Finding the Fourth Proportional to 3,109.51, 4,664.27 and 2,919.43

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Solution

The fourth proportional to 3,109.51, 4,664.27 and 2,919.43 is: 4,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.51 : 4,664.27 = 2,919.43 : x
  2. Step 2: Convert to fraction form
    3,109.51/4,664.27 = 2,919.43/x
  3. Step 3: Cross multiply
    3,109.51x = 4,664.27 × 2,919.43
  4. Step 4: Simplify right side
    3,109.51x = 13,617,009.77
  5. Step 5: Solve for x
    x = 13,617,009.77/3,109.51
  6. Step 6: Final answer
    x = 4,379.15

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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.