Home / 1,285.36-1,772.52-1,035.88

Finding the Fourth Proportional to 1,285.36, 1,772.52 and 1,035.88

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Solution

The fourth proportional to 1,285.36, 1,772.52 and 1,035.88 is: 1,428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.36 : 1,772.52 = 1,035.88 : x
  2. Step 2: Convert to fraction form
    1,285.36/1,772.52 = 1,035.88/x
  3. Step 3: Cross multiply
    1,285.36x = 1,772.52 × 1,035.88
  4. Step 4: Simplify right side
    1,285.36x = 1,836,118.02
  5. Step 5: Solve for x
    x = 1,836,118.02/1,285.36
  6. Step 6: Final answer
    x = 1,428.49

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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.