Home / 1,283.15-1,768.83-1,105.35

Finding the Fourth Proportional to 1,283.15, 1,768.83 and 1,105.35

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Solution

The fourth proportional to 1,283.15, 1,768.83 and 1,105.35 is: 1,523.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.15 : 1,768.83 = 1,105.35 : x
  2. Step 2: Convert to fraction form
    1,283.15/1,768.83 = 1,105.35/x
  3. Step 3: Cross multiply
    1,283.15x = 1,768.83 × 1,105.35
  4. Step 4: Simplify right side
    1,283.15x = 1,955,176.24
  5. Step 5: Solve for x
    x = 1,955,176.24/1,283.15
  6. Step 6: Final answer
    x = 1,523.74

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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.