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Finding the Fourth Proportional to 2,104.36, 3,156.16 and 565

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Solution

The fourth proportional to 2,104.36, 3,156.16 and 565 is: 847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.36 : 3,156.16 = 565 : x
  2. Step 2: Convert to fraction form
    2,104.36/3,156.16 = 565/x
  3. Step 3: Cross multiply
    2,104.36x = 3,156.16 × 565
  4. Step 4: Simplify right side
    2,104.36x = 1,783,230.40
  5. Step 5: Solve for x
    x = 1,783,230.40/2,104.36
  6. Step 6: Final answer
    x = 847.40

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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.