Home / 4,145.20-5,721-3,148.84

Finding the Fourth Proportional to 4,145.20, 5,721 and 3,148.84

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Solution

The fourth proportional to 4,145.20, 5,721 and 3,148.84 is: 4,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.20 : 5,721 = 3,148.84 : x
  2. Step 2: Convert to fraction form
    4,145.20/5,721 = 3,148.84/x
  3. Step 3: Cross multiply
    4,145.20x = 5,721 × 3,148.84
  4. Step 4: Simplify right side
    4,145.20x = 18,014,513.64
  5. Step 5: Solve for x
    x = 18,014,513.64/4,145.20
  6. Step 6: Final answer
    x = 4,345.87

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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.