Home / 1,035.03-1,428.67-636.82

Finding the Fourth Proportional to 1,035.03, 1,428.67 and 636.82

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Solution

The fourth proportional to 1,035.03, 1,428.67 and 636.82 is: 879.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.03 : 1,428.67 = 636.82 : x
  2. Step 2: Convert to fraction form
    1,035.03/1,428.67 = 636.82/x
  3. Step 3: Cross multiply
    1,035.03x = 1,428.67 × 636.82
  4. Step 4: Simplify right side
    1,035.03x = 909,800.47
  5. Step 5: Solve for x
    x = 909,800.47/1,035.03
  6. Step 6: Final answer
    x = 879.01

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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.