Home / 2,189.84-3,022.37-1,305.70

Finding the Fourth Proportional to 2,189.84, 3,022.37 and 1,305.70

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Solution

The fourth proportional to 2,189.84, 3,022.37 and 1,305.70 is: 1,802.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.84 : 3,022.37 = 1,305.70 : x
  2. Step 2: Convert to fraction form
    2,189.84/3,022.37 = 1,305.70/x
  3. Step 3: Cross multiply
    2,189.84x = 3,022.37 × 1,305.70
  4. Step 4: Simplify right side
    2,189.84x = 3,946,294.42
  5. Step 5: Solve for x
    x = 3,946,294.42/2,189.84
  6. Step 6: Final answer
    x = 1,802.09

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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.