Home / 3,977.42-5,486.96-2,720.24

Finding the Fourth Proportional to 3,977.42, 5,486.96 and 2,720.24

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Solution

The fourth proportional to 3,977.42, 5,486.96 and 2,720.24 is: 3,752.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.42 : 5,486.96 = 2,720.24 : x
  2. Step 2: Convert to fraction form
    3,977.42/5,486.96 = 2,720.24/x
  3. Step 3: Cross multiply
    3,977.42x = 5,486.96 × 2,720.24
  4. Step 4: Simplify right side
    3,977.42x = 14,925,807.03
  5. Step 5: Solve for x
    x = 14,925,807.03/3,977.42
  6. Step 6: Final answer
    x = 3,752.64

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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.