Home / 3,507.21-4,839.75-2,015.51

Finding the Fourth Proportional to 3,507.21, 4,839.75 and 2,015.51

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Solution

The fourth proportional to 3,507.21, 4,839.75 and 2,015.51 is: 2,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.21 : 4,839.75 = 2,015.51 : x
  2. Step 2: Convert to fraction form
    3,507.21/4,839.75 = 2,015.51/x
  3. Step 3: Cross multiply
    3,507.21x = 4,839.75 × 2,015.51
  4. Step 4: Simplify right side
    3,507.21x = 9,754,540.32
  5. Step 5: Solve for x
    x = 9,754,540.32/3,507.21
  6. Step 6: Final answer
    x = 2,781.28

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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.