Home / 3,928.41-5,420.51-2,356.54

Finding the Fourth Proportional to 3,928.41, 5,420.51 and 2,356.54

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Solution

The fourth proportional to 3,928.41, 5,420.51 and 2,356.54 is: 3,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.41 : 5,420.51 = 2,356.54 : x
  2. Step 2: Convert to fraction form
    3,928.41/5,420.51 = 2,356.54/x
  3. Step 3: Cross multiply
    3,928.41x = 5,420.51 × 2,356.54
  4. Step 4: Simplify right side
    3,928.41x = 12,773,648.64
  5. Step 5: Solve for x
    x = 12,773,648.64/3,928.41
  6. Step 6: Final answer
    x = 3,251.61

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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.