Home / 3,109.50-4,288.62-2,114.40

Finding the Fourth Proportional to 3,109.50, 4,288.62 and 2,114.40

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Solution

The fourth proportional to 3,109.50, 4,288.62 and 2,114.40 is: 2,916.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.50 : 4,288.62 = 2,114.40 : x
  2. Step 2: Convert to fraction form
    3,109.50/4,288.62 = 2,114.40/x
  3. Step 3: Cross multiply
    3,109.50x = 4,288.62 × 2,114.40
  4. Step 4: Simplify right side
    3,109.50x = 9,067,858.13
  5. Step 5: Solve for x
    x = 9,067,858.13/3,109.50
  6. Step 6: Final answer
    x = 2,916.18

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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.