Home / 1,318.44-1,973.61-1,111.62

Finding the Fourth Proportional to 1,318.44, 1,973.61 and 1,111.62

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Solution

The fourth proportional to 1,318.44, 1,973.61 and 1,111.62 is: 1,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.44 : 1,973.61 = 1,111.62 : x
  2. Step 2: Convert to fraction form
    1,318.44/1,973.61 = 1,111.62/x
  3. Step 3: Cross multiply
    1,318.44x = 1,973.61 × 1,111.62
  4. Step 4: Simplify right side
    1,318.44x = 2,193,904.35
  5. Step 5: Solve for x
    x = 2,193,904.35/1,318.44
  6. Step 6: Final answer
    x = 1,664.02

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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.