Home / 3,883.40-5,359.12-2,115.01

Finding the Fourth Proportional to 3,883.40, 5,359.12 and 2,115.01

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Solution

The fourth proportional to 3,883.40, 5,359.12 and 2,115.01 is: 2,918.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.40 : 5,359.12 = 2,115.01 : x
  2. Step 2: Convert to fraction form
    3,883.40/5,359.12 = 2,115.01/x
  3. Step 3: Cross multiply
    3,883.40x = 5,359.12 × 2,115.01
  4. Step 4: Simplify right side
    3,883.40x = 11,334,581.82
  5. Step 5: Solve for x
    x = 11,334,581.82/3,883.40
  6. Step 6: Final answer
    x = 2,918.73

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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.