Home / 2,106.08-3,159.20-873.60

Finding the Fourth Proportional to 2,106.08, 3,159.20 and 873.60

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Solution

The fourth proportional to 2,106.08, 3,159.20 and 873.60 is: 1,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.08 : 3,159.20 = 873.60 : x
  2. Step 2: Convert to fraction form
    2,106.08/3,159.20 = 873.60/x
  3. Step 3: Cross multiply
    2,106.08x = 3,159.20 × 873.60
  4. Step 4: Simplify right side
    2,106.08x = 2,759,877.12
  5. Step 5: Solve for x
    x = 2,759,877.12/2,106.08
  6. Step 6: Final answer
    x = 1,310.43

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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.