Home / 3,439.42-4,742.91-2,943.70

Finding the Fourth Proportional to 3,439.42, 4,742.91 and 2,943.70

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Solution

The fourth proportional to 3,439.42, 4,742.91 and 2,943.70 is: 4,059.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.42 : 4,742.91 = 2,943.70 : x
  2. Step 2: Convert to fraction form
    3,439.42/4,742.91 = 2,943.70/x
  3. Step 3: Cross multiply
    3,439.42x = 4,742.91 × 2,943.70
  4. Step 4: Simplify right side
    3,439.42x = 13,961,704.17
  5. Step 5: Solve for x
    x = 13,961,704.17/3,439.42
  6. Step 6: Final answer
    x = 4,059.32

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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.