Home / 3,887.47-5,364.85-2,209.16

Finding the Fourth Proportional to 3,887.47, 5,364.85 and 2,209.16

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Solution

The fourth proportional to 3,887.47, 5,364.85 and 2,209.16 is: 3,048.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.47 : 5,364.85 = 2,209.16 : x
  2. Step 2: Convert to fraction form
    3,887.47/5,364.85 = 2,209.16/x
  3. Step 3: Cross multiply
    3,887.47x = 5,364.85 × 2,209.16
  4. Step 4: Simplify right side
    3,887.47x = 11,851,793.09
  5. Step 5: Solve for x
    x = 11,851,793.09/3,887.47
  6. Step 6: Final answer
    x = 3,048.72

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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.