Home / 2,118.62-3,171.76-1,573.22

Finding the Fourth Proportional to 2,118.62, 3,171.76 and 1,573.22

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Solution

The fourth proportional to 2,118.62, 3,171.76 and 1,573.22 is: 2,355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.62 : 3,171.76 = 1,573.22 : x
  2. Step 2: Convert to fraction form
    2,118.62/3,171.76 = 1,573.22/x
  3. Step 3: Cross multiply
    2,118.62x = 3,171.76 × 1,573.22
  4. Step 4: Simplify right side
    2,118.62x = 4,989,880.26
  5. Step 5: Solve for x
    x = 4,989,880.26/2,118.62
  6. Step 6: Final answer
    x = 2,355.25

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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.