Home / 2,439.12-3,364.04-2,143.76

Finding the Fourth Proportional to 2,439.12, 3,364.04 and 2,143.76

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Solution

The fourth proportional to 2,439.12, 3,364.04 and 2,143.76 is: 2,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.12 : 3,364.04 = 2,143.76 : x
  2. Step 2: Convert to fraction form
    2,439.12/3,364.04 = 2,143.76/x
  3. Step 3: Cross multiply
    2,439.12x = 3,364.04 × 2,143.76
  4. Step 4: Simplify right side
    2,439.12x = 7,211,694.39
  5. Step 5: Solve for x
    x = 7,211,694.39/2,439.12
  6. Step 6: Final answer
    x = 2,956.68

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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.