Home / 3,157.56-4,352.04-2,161.08

Finding the Fourth Proportional to 3,157.56, 4,352.04 and 2,161.08

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Solution

The fourth proportional to 3,157.56, 4,352.04 and 2,161.08 is: 2,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.56 : 4,352.04 = 2,161.08 : x
  2. Step 2: Convert to fraction form
    3,157.56/4,352.04 = 2,161.08/x
  3. Step 3: Cross multiply
    3,157.56x = 4,352.04 × 2,161.08
  4. Step 4: Simplify right side
    3,157.56x = 9,405,106.60
  5. Step 5: Solve for x
    x = 9,405,106.60/3,157.56
  6. Step 6: Final answer
    x = 2,978.60

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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.