Home / 2,190.02-3,022.36-1,305.86

Finding the Fourth Proportional to 2,190.02, 3,022.36 and 1,305.86

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Solution

The fourth proportional to 2,190.02, 3,022.36 and 1,305.86 is: 1,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.02 : 3,022.36 = 1,305.86 : x
  2. Step 2: Convert to fraction form
    2,190.02/3,022.36 = 1,305.86/x
  3. Step 3: Cross multiply
    2,190.02x = 3,022.36 × 1,305.86
  4. Step 4: Simplify right side
    2,190.02x = 3,946,760.65
  5. Step 5: Solve for x
    x = 3,946,760.65/2,190.02
  6. Step 6: Final answer
    x = 1,802.16

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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.