Home / 2,104.36-3,155.10-1,129.48

Finding the Fourth Proportional to 2,104.36, 3,155.10 and 1,129.48

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Solution

The fourth proportional to 2,104.36, 3,155.10 and 1,129.48 is: 1,693.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.36 : 3,155.10 = 1,129.48 : x
  2. Step 2: Convert to fraction form
    2,104.36/3,155.10 = 1,129.48/x
  3. Step 3: Cross multiply
    2,104.36x = 3,155.10 × 1,129.48
  4. Step 4: Simplify right side
    2,104.36x = 3,563,622.35
  5. Step 5: Solve for x
    x = 3,563,622.35/2,104.36
  6. Step 6: Final answer
    x = 1,693.45

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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.