Home / 3,153.09-4,351.37-1,808.90

Finding the Fourth Proportional to 3,153.09, 4,351.37 and 1,808.90

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Solution

The fourth proportional to 3,153.09, 4,351.37 and 1,808.90 is: 2,496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.09 : 4,351.37 = 1,808.90 : x
  2. Step 2: Convert to fraction form
    3,153.09/4,351.37 = 1,808.90/x
  3. Step 3: Cross multiply
    3,153.09x = 4,351.37 × 1,808.90
  4. Step 4: Simplify right side
    3,153.09x = 7,871,162.39
  5. Step 5: Solve for x
    x = 7,871,162.39/3,153.09
  6. Step 6: Final answer
    x = 2,496.33

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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.