Home / 3,975.21-5,484.51-2,381.54

Finding the Fourth Proportional to 3,975.21, 5,484.51 and 2,381.54

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Solution

The fourth proportional to 3,975.21, 5,484.51 and 2,381.54 is: 3,285.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.21 : 5,484.51 = 2,381.54 : x
  2. Step 2: Convert to fraction form
    3,975.21/5,484.51 = 2,381.54/x
  3. Step 3: Cross multiply
    3,975.21x = 5,484.51 × 2,381.54
  4. Step 4: Simplify right side
    3,975.21x = 13,061,552.52
  5. Step 5: Solve for x
    x = 13,061,552.52/3,975.21
  6. Step 6: Final answer
    x = 3,285.75

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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.