Home / 1,640.01-2,278.88-1,619.31

Finding the Fourth Proportional to 1,640.01, 2,278.88 and 1,619.31

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Solution

The fourth proportional to 1,640.01, 2,278.88 and 1,619.31 is: 2,250.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.01 : 2,278.88 = 1,619.31 : x
  2. Step 2: Convert to fraction form
    1,640.01/2,278.88 = 1,619.31/x
  3. Step 3: Cross multiply
    1,640.01x = 2,278.88 × 1,619.31
  4. Step 4: Simplify right side
    1,640.01x = 3,690,217.22
  5. Step 5: Solve for x
    x = 3,690,217.22/1,640.01
  6. Step 6: Final answer
    x = 2,250.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.