Home / 2,190.29-3,022.76-1,246.39

Finding the Fourth Proportional to 2,190.29, 3,022.76 and 1,246.39

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Solution

The fourth proportional to 2,190.29, 3,022.76 and 1,246.39 is: 1,720.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.29 : 3,022.76 = 1,246.39 : x
  2. Step 2: Convert to fraction form
    2,190.29/3,022.76 = 1,246.39/x
  3. Step 3: Cross multiply
    2,190.29x = 3,022.76 × 1,246.39
  4. Step 4: Simplify right side
    2,190.29x = 3,767,531.17
  5. Step 5: Solve for x
    x = 3,767,531.17/2,190.29
  6. Step 6: Final answer
    x = 1,720.11

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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.