Home / 1,028.63-1,419.16-609.12

Finding the Fourth Proportional to 1,028.63, 1,419.16 and 609.12

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Solution

The fourth proportional to 1,028.63, 1,419.16 and 609.12 is: 840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.63 : 1,419.16 = 609.12 : x
  2. Step 2: Convert to fraction form
    1,028.63/1,419.16 = 609.12/x
  3. Step 3: Cross multiply
    1,028.63x = 1,419.16 × 609.12
  4. Step 4: Simplify right side
    1,028.63x = 864,440.07
  5. Step 5: Solve for x
    x = 864,440.07/1,028.63
  6. Step 6: Final answer
    x = 840.38

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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.