Home / 4,208.18-5,811.46-2,887.70

Finding the Fourth Proportional to 4,208.18, 5,811.46 and 2,887.70

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Solution

The fourth proportional to 4,208.18, 5,811.46 and 2,887.70 is: 3,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,208.18 : 5,811.46 = 2,887.70 : x
  2. Step 2: Convert to fraction form
    4,208.18/5,811.46 = 2,887.70/x
  3. Step 3: Cross multiply
    4,208.18x = 5,811.46 × 2,887.70
  4. Step 4: Simplify right side
    4,208.18x = 16,781,753.04
  5. Step 5: Solve for x
    x = 16,781,753.04/4,208.18
  6. Step 6: Final answer
    x = 3,987.89

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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.