Home / 2,295.36-3,161.16-1,978.56

Finding the Fourth Proportional to 2,295.36, 3,161.16 and 1,978.56

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Solution

The fourth proportional to 2,295.36, 3,161.16 and 1,978.56 is: 2,724.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.36 : 3,161.16 = 1,978.56 : x
  2. Step 2: Convert to fraction form
    2,295.36/3,161.16 = 1,978.56/x
  3. Step 3: Cross multiply
    2,295.36x = 3,161.16 × 1,978.56
  4. Step 4: Simplify right side
    2,295.36x = 6,254,544.73
  5. Step 5: Solve for x
    x = 6,254,544.73/2,295.36
  6. Step 6: Final answer
    x = 2,724.86

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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.