Home / 2,190.47-3,022.91-1,246.40

Finding the Fourth Proportional to 2,190.47, 3,022.91 and 1,246.40

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Solution

The fourth proportional to 2,190.47, 3,022.91 and 1,246.40 is: 1,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.47 : 3,022.91 = 1,246.40 : x
  2. Step 2: Convert to fraction form
    2,190.47/3,022.91 = 1,246.40/x
  3. Step 3: Cross multiply
    2,190.47x = 3,022.91 × 1,246.40
  4. Step 4: Simplify right side
    2,190.47x = 3,767,739.91
  5. Step 5: Solve for x
    x = 3,767,739.91/2,190.47
  6. Step 6: Final answer
    x = 1,720.06

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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.