Home / 7,137.15-10,705.75-1,943.02

Finding the Fourth Proportional to 7,137.15, 10,705.75 and 1,943.02

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Solution

The fourth proportional to 7,137.15, 10,705.75 and 1,943.02 is: 2,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.15 : 10,705.75 = 1,943.02 : x
  2. Step 2: Convert to fraction form
    7,137.15/10,705.75 = 1,943.02/x
  3. Step 3: Cross multiply
    7,137.15x = 10,705.75 × 1,943.02
  4. Step 4: Simplify right side
    7,137.15x = 20,801,494.89
  5. Step 5: Solve for x
    x = 20,801,494.89/7,137.15
  6. Step 6: Final answer
    x = 2,914.54

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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.