Home / 3,887.39-5,364.40-2,208.57

Finding the Fourth Proportional to 3,887.39, 5,364.40 and 2,208.57

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Solution

The fourth proportional to 3,887.39, 5,364.40 and 2,208.57 is: 3,047.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.39 : 5,364.40 = 2,208.57 : x
  2. Step 2: Convert to fraction form
    3,887.39/5,364.40 = 2,208.57/x
  3. Step 3: Cross multiply
    3,887.39x = 5,364.40 × 2,208.57
  4. Step 4: Simplify right side
    3,887.39x = 11,847,647.39
  5. Step 5: Solve for x
    x = 11,847,647.39/3,887.39
  6. Step 6: Final answer
    x = 3,047.72

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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.