Home / 3,977.66-5,486.74-2,860.12

Finding the Fourth Proportional to 3,977.66, 5,486.74 and 2,860.12

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Solution

The fourth proportional to 3,977.66, 5,486.74 and 2,860.12 is: 3,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.66 : 5,486.74 = 2,860.12 : x
  2. Step 2: Convert to fraction form
    3,977.66/5,486.74 = 2,860.12/x
  3. Step 3: Cross multiply
    3,977.66x = 5,486.74 × 2,860.12
  4. Step 4: Simplify right side
    3,977.66x = 15,692,734.81
  5. Step 5: Solve for x
    x = 15,692,734.81/3,977.66
  6. Step 6: Final answer
    x = 3,945.22

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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.