Home / 1,967.36-2,715.80-1,181.25

Finding the Fourth Proportional to 1,967.36, 2,715.80 and 1,181.25

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Solution

The fourth proportional to 1,967.36, 2,715.80 and 1,181.25 is: 1,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,967.36 : 2,715.80 = 1,181.25 : x
  2. Step 2: Convert to fraction form
    1,967.36/2,715.80 = 1,181.25/x
  3. Step 3: Cross multiply
    1,967.36x = 2,715.80 × 1,181.25
  4. Step 4: Simplify right side
    1,967.36x = 3,208,032.84
  5. Step 5: Solve for x
    x = 3,208,032.84/1,967.36
  6. Step 6: Final answer
    x = 1,630.63

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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.