Home / 2,118.26-2,921.18-1,620.92

Finding the Fourth Proportional to 2,118.26, 2,921.18 and 1,620.92

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Solution

The fourth proportional to 2,118.26, 2,921.18 and 1,620.92 is: 2,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.26 : 2,921.18 = 1,620.92 : x
  2. Step 2: Convert to fraction form
    2,118.26/2,921.18 = 1,620.92/x
  3. Step 3: Cross multiply
    2,118.26x = 2,921.18 × 1,620.92
  4. Step 4: Simplify right side
    2,118.26x = 4,734,999.09
  5. Step 5: Solve for x
    x = 4,734,999.09/2,118.26
  6. Step 6: Final answer
    x = 2,235.32

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Half scale
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Double scale
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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.