Home / 2,427.76-3,635.70-1,129.60

Finding the Fourth Proportional to 2,427.76, 3,635.70 and 1,129.60

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Solution

The fourth proportional to 2,427.76, 3,635.70 and 1,129.60 is: 1,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.76 : 3,635.70 = 1,129.60 : x
  2. Step 2: Convert to fraction form
    2,427.76/3,635.70 = 1,129.60/x
  3. Step 3: Cross multiply
    2,427.76x = 3,635.70 × 1,129.60
  4. Step 4: Simplify right side
    2,427.76x = 4,106,886.72
  5. Step 5: Solve for x
    x = 4,106,886.72/2,427.76
  6. Step 6: Final answer
    x = 1,691.64

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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.