Home / 2,089.12-3,132.04-1,318

Finding the Fourth Proportional to 2,089.12, 3,132.04 and 1,318

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Solution

The fourth proportional to 2,089.12, 3,132.04 and 1,318 is: 1,975.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.12 : 3,132.04 = 1,318 : x
  2. Step 2: Convert to fraction form
    2,089.12/3,132.04 = 1,318/x
  3. Step 3: Cross multiply
    2,089.12x = 3,132.04 × 1,318
  4. Step 4: Simplify right side
    2,089.12x = 4,128,028.72
  5. Step 5: Solve for x
    x = 4,128,028.72/2,089.12
  6. Step 6: Final answer
    x = 1,975.97

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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.