Home / 3,717.82-5,130.84-2,145.88

Finding the Fourth Proportional to 3,717.82, 5,130.84 and 2,145.88

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Solution

The fourth proportional to 3,717.82, 5,130.84 and 2,145.88 is: 2,961.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.82 : 5,130.84 = 2,145.88 : x
  2. Step 2: Convert to fraction form
    3,717.82/5,130.84 = 2,145.88/x
  3. Step 3: Cross multiply
    3,717.82x = 5,130.84 × 2,145.88
  4. Step 4: Simplify right side
    3,717.82x = 11,010,166.94
  5. Step 5: Solve for x
    x = 11,010,166.94/3,717.82
  6. Step 6: Final answer
    x = 2,961.46

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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.