Home / 2,231.48-3,079.05-1,287.16

Finding the Fourth Proportional to 2,231.48, 3,079.05 and 1,287.16

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Solution

The fourth proportional to 2,231.48, 3,079.05 and 1,287.16 is: 1,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.48 : 3,079.05 = 1,287.16 : x
  2. Step 2: Convert to fraction form
    2,231.48/3,079.05 = 1,287.16/x
  3. Step 3: Cross multiply
    2,231.48x = 3,079.05 × 1,287.16
  4. Step 4: Simplify right side
    2,231.48x = 3,963,230.00
  5. Step 5: Solve for x
    x = 3,963,230.00/2,231.48
  6. Step 6: Final answer
    x = 1,776.05

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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.