Home / 1,235.24-1,851.60-412.76

Finding the Fourth Proportional to 1,235.24, 1,851.60 and 412.76

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Solution

The fourth proportional to 1,235.24, 1,851.60 and 412.76 is: 618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.24 : 1,851.60 = 412.76 : x
  2. Step 2: Convert to fraction form
    1,235.24/1,851.60 = 412.76/x
  3. Step 3: Cross multiply
    1,235.24x = 1,851.60 × 412.76
  4. Step 4: Simplify right side
    1,235.24x = 764,266.42
  5. Step 5: Solve for x
    x = 764,266.42/1,235.24
  6. Step 6: Final answer
    x = 618.72

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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.