Home / 2,798.80-3,853.56-2,378.32

Finding the Fourth Proportional to 2,798.80, 3,853.56 and 2,378.32

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Solution

The fourth proportional to 2,798.80, 3,853.56 and 2,378.32 is: 3,274.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.80 : 3,853.56 = 2,378.32 : x
  2. Step 2: Convert to fraction form
    2,798.80/3,853.56 = 2,378.32/x
  3. Step 3: Cross multiply
    2,798.80x = 3,853.56 × 2,378.32
  4. Step 4: Simplify right side
    2,798.80x = 9,164,998.82
  5. Step 5: Solve for x
    x = 9,164,998.82/2,798.80
  6. Step 6: Final answer
    x = 3,274.62

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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.