Home / 3,941.42-5,439.16-2,148.91

Finding the Fourth Proportional to 3,941.42, 5,439.16 and 2,148.91

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Solution

The fourth proportional to 3,941.42, 5,439.16 and 2,148.91 is: 2,965.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.42 : 5,439.16 = 2,148.91 : x
  2. Step 2: Convert to fraction form
    3,941.42/5,439.16 = 2,148.91/x
  3. Step 3: Cross multiply
    3,941.42x = 5,439.16 × 2,148.91
  4. Step 4: Simplify right side
    3,941.42x = 11,688,265.32
  5. Step 5: Solve for x
    x = 11,688,265.32/3,941.42
  6. Step 6: Final answer
    x = 2,965.50

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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.