Home / 3,187.40-4,782.96-1,338.36

Finding the Fourth Proportional to 3,187.40, 4,782.96 and 1,338.36

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Solution

The fourth proportional to 3,187.40, 4,782.96 and 1,338.36 is: 2,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.40 : 4,782.96 = 1,338.36 : x
  2. Step 2: Convert to fraction form
    3,187.40/4,782.96 = 1,338.36/x
  3. Step 3: Cross multiply
    3,187.40x = 4,782.96 × 1,338.36
  4. Step 4: Simplify right side
    3,187.40x = 6,401,322.35
  5. Step 5: Solve for x
    x = 6,401,322.35/3,187.40
  6. Step 6: Final answer
    x = 2,008.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.