Home / 3,976.77-5,487.96-2,208.40

Finding the Fourth Proportional to 3,976.77, 5,487.96 and 2,208.40

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Solution

The fourth proportional to 3,976.77, 5,487.96 and 2,208.40 is: 3,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.77 : 5,487.96 = 2,208.40 : x
  2. Step 2: Convert to fraction form
    3,976.77/5,487.96 = 2,208.40/x
  3. Step 3: Cross multiply
    3,976.77x = 5,487.96 × 2,208.40
  4. Step 4: Simplify right side
    3,976.77x = 12,119,610.86
  5. Step 5: Solve for x
    x = 12,119,610.86/3,976.77
  6. Step 6: Final answer
    x = 3,047.60

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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.