Home / 2,485.61-3,722.75-1,187.99

Finding the Fourth Proportional to 2,485.61, 3,722.75 and 1,187.99

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Solution

The fourth proportional to 2,485.61, 3,722.75 and 1,187.99 is: 1,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.61 : 3,722.75 = 1,187.99 : x
  2. Step 2: Convert to fraction form
    2,485.61/3,722.75 = 1,187.99/x
  3. Step 3: Cross multiply
    2,485.61x = 3,722.75 × 1,187.99
  4. Step 4: Simplify right side
    2,485.61x = 4,422,593.14
  5. Step 5: Solve for x
    x = 4,422,593.14/2,485.61
  6. Step 6: Final answer
    x = 1,779.28

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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.