Home / 3,986.60-5,501.41-2,218.16

Finding the Fourth Proportional to 3,986.60, 5,501.41 and 2,218.16

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Solution

The fourth proportional to 3,986.60, 5,501.41 and 2,218.16 is: 3,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.60 : 5,501.41 = 2,218.16 : x
  2. Step 2: Convert to fraction form
    3,986.60/5,501.41 = 2,218.16/x
  3. Step 3: Cross multiply
    3,986.60x = 5,501.41 × 2,218.16
  4. Step 4: Simplify right side
    3,986.60x = 12,203,015.81
  5. Step 5: Solve for x
    x = 12,203,015.81/3,986.60
  6. Step 6: Final answer
    x = 3,061.01

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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.