Home / 2,106.20-3,160.38-874.64

Finding the Fourth Proportional to 2,106.20, 3,160.38 and 874.64

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Solution

The fourth proportional to 2,106.20, 3,160.38 and 874.64 is: 1,312.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.20 : 3,160.38 = 874.64 : x
  2. Step 2: Convert to fraction form
    2,106.20/3,160.38 = 874.64/x
  3. Step 3: Cross multiply
    2,106.20x = 3,160.38 × 874.64
  4. Step 4: Simplify right side
    2,106.20x = 2,764,194.76
  5. Step 5: Solve for x
    x = 2,764,194.76/2,106.20
  6. Step 6: Final answer
    x = 1,312.41

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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.