Home / 1,308.57-1,961.94-1,104.45

Finding the Fourth Proportional to 1,308.57, 1,961.94 and 1,104.45

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Solution

The fourth proportional to 1,308.57, 1,961.94 and 1,104.45 is: 1,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.57 : 1,961.94 = 1,104.45 : x
  2. Step 2: Convert to fraction form
    1,308.57/1,961.94 = 1,104.45/x
  3. Step 3: Cross multiply
    1,308.57x = 1,961.94 × 1,104.45
  4. Step 4: Simplify right side
    1,308.57x = 2,166,864.63
  5. Step 5: Solve for x
    x = 2,166,864.63/1,308.57
  6. Step 6: Final answer
    x = 1,655.90

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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.