Home / 3,913.42-5,400.52-2,145.19

Finding the Fourth Proportional to 3,913.42, 5,400.52 and 2,145.19

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Solution

The fourth proportional to 3,913.42, 5,400.52 and 2,145.19 is: 2,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.42 : 5,400.52 = 2,145.19 : x
  2. Step 2: Convert to fraction form
    3,913.42/5,400.52 = 2,145.19/x
  3. Step 3: Cross multiply
    3,913.42x = 5,400.52 × 2,145.19
  4. Step 4: Simplify right side
    3,913.42x = 11,585,141.50
  5. Step 5: Solve for x
    x = 11,585,141.50/3,913.42
  6. Step 6: Final answer
    x = 2,960.36

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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.