Home / 3,887.51-5,364.57-2,208.70

Finding the Fourth Proportional to 3,887.51, 5,364.57 and 2,208.70

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Solution

The fourth proportional to 3,887.51, 5,364.57 and 2,208.70 is: 3,047.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.51 : 5,364.57 = 2,208.70 : x
  2. Step 2: Convert to fraction form
    3,887.51/5,364.57 = 2,208.70/x
  3. Step 3: Cross multiply
    3,887.51x = 5,364.57 × 2,208.70
  4. Step 4: Simplify right side
    3,887.51x = 11,848,698.94
  5. Step 5: Solve for x
    x = 11,848,698.94/3,887.51
  6. Step 6: Final answer
    x = 3,047.89

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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.