Home / 3,956.84-5,460.38-2,188.40

Finding the Fourth Proportional to 3,956.84, 5,460.38 and 2,188.40

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Solution

The fourth proportional to 3,956.84, 5,460.38 and 2,188.40 is: 3,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.84 : 5,460.38 = 2,188.40 : x
  2. Step 2: Convert to fraction form
    3,956.84/5,460.38 = 2,188.40/x
  3. Step 3: Cross multiply
    3,956.84x = 5,460.38 × 2,188.40
  4. Step 4: Simplify right side
    3,956.84x = 11,949,495.59
  5. Step 5: Solve for x
    x = 11,949,495.59/3,956.84
  6. Step 6: Final answer
    x = 3,019.96

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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.