Home / 3,956.75-5,460.87-2,278.12

Finding the Fourth Proportional to 3,956.75, 5,460.87 and 2,278.12

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Solution

The fourth proportional to 3,956.75, 5,460.87 and 2,278.12 is: 3,144.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.75 : 5,460.87 = 2,278.12 : x
  2. Step 2: Convert to fraction form
    3,956.75/5,460.87 = 2,278.12/x
  3. Step 3: Cross multiply
    3,956.75x = 5,460.87 × 2,278.12
  4. Step 4: Simplify right side
    3,956.75x = 12,440,503.51
  5. Step 5: Solve for x
    x = 12,440,503.51/3,956.75
  6. Step 6: Final answer
    x = 3,144.12

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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.