Home / 2,219.36-3,062.86-1,275.45

Finding the Fourth Proportional to 2,219.36, 3,062.86 and 1,275.45

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Solution

The fourth proportional to 2,219.36, 3,062.86 and 1,275.45 is: 1,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.36 : 3,062.86 = 1,275.45 : x
  2. Step 2: Convert to fraction form
    2,219.36/3,062.86 = 1,275.45/x
  3. Step 3: Cross multiply
    2,219.36x = 3,062.86 × 1,275.45
  4. Step 4: Simplify right side
    2,219.36x = 3,906,524.79
  5. Step 5: Solve for x
    x = 3,906,524.79/2,219.36
  6. Step 6: Final answer
    x = 1,760.20

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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.