Home / 2,189.19-3,021.08-1,403.24

Finding the Fourth Proportional to 2,189.19, 3,021.08 and 1,403.24

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Solution

The fourth proportional to 2,189.19, 3,021.08 and 1,403.24 is: 1,936.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.19 : 3,021.08 = 1,403.24 : x
  2. Step 2: Convert to fraction form
    2,189.19/3,021.08 = 1,403.24/x
  3. Step 3: Cross multiply
    2,189.19x = 3,021.08 × 1,403.24
  4. Step 4: Simplify right side
    2,189.19x = 4,239,285.19
  5. Step 5: Solve for x
    x = 4,239,285.19/2,189.19
  6. Step 6: Final answer
    x = 1,936.46

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Half 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.