Home / 3,887.40-5,364.43-2,119.03

Finding the Fourth Proportional to 3,887.40, 5,364.43 and 2,119.03

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Solution

The fourth proportional to 3,887.40, 5,364.43 and 2,119.03 is: 2,924.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.40 : 5,364.43 = 2,119.03 : x
  2. Step 2: Convert to fraction form
    3,887.40/5,364.43 = 2,119.03/x
  3. Step 3: Cross multiply
    3,887.40x = 5,364.43 × 2,119.03
  4. Step 4: Simplify right side
    3,887.40x = 11,367,388.10
  5. Step 5: Solve for x
    x = 11,367,388.10/3,887.40
  6. Step 6: Final answer
    x = 2,924.16

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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.