Home / 2,455.28-3,388.38-1,407.55

Finding the Fourth Proportional to 2,455.28, 3,388.38 and 1,407.55

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Solution

The fourth proportional to 2,455.28, 3,388.38 and 1,407.55 is: 1,942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.28 : 3,388.38 = 1,407.55 : x
  2. Step 2: Convert to fraction form
    2,455.28/3,388.38 = 1,407.55/x
  3. Step 3: Cross multiply
    2,455.28x = 3,388.38 × 1,407.55
  4. Step 4: Simplify right side
    2,455.28x = 4,769,305.80
  5. Step 5: Solve for x
    x = 4,769,305.80/2,455.28
  6. Step 6: Final answer
    x = 1,942.47

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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.