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Finding the Fourth Proportional to 2,165.36, 3,247.07 and 778.34

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Solution

The fourth proportional to 2,165.36, 3,247.07 and 778.34 is: 1,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.36 : 3,247.07 = 778.34 : x
  2. Step 2: Convert to fraction form
    2,165.36/3,247.07 = 778.34/x
  3. Step 3: Cross multiply
    2,165.36x = 3,247.07 × 778.34
  4. Step 4: Simplify right side
    2,165.36x = 2,527,304.34
  5. Step 5: Solve for x
    x = 2,527,304.34/2,165.36
  6. Step 6: Final answer
    x = 1,167.15

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1.5x scale

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.