Home / 4,145.67-5,721-2,257.20

Finding the Fourth Proportional to 4,145.67, 5,721 and 2,257.20

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Solution

The fourth proportional to 4,145.67, 5,721 and 2,257.20 is: 3,114.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.67 : 5,721 = 2,257.20 : x
  2. Step 2: Convert to fraction form
    4,145.67/5,721 = 2,257.20/x
  3. Step 3: Cross multiply
    4,145.67x = 5,721 × 2,257.20
  4. Step 4: Simplify right side
    4,145.67x = 12,913,441.20
  5. Step 5: Solve for x
    x = 12,913,441.20/4,145.67
  6. Step 6: Final answer
    x = 3,114.92

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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.