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Finding the Fourth Proportional to 2,806.62, 4,213 and 1,164.32

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Solution

The fourth proportional to 2,806.62, 4,213 and 1,164.32 is: 1,747.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.62 : 4,213 = 1,164.32 : x
  2. Step 2: Convert to fraction form
    2,806.62/4,213 = 1,164.32/x
  3. Step 3: Cross multiply
    2,806.62x = 4,213 × 1,164.32
  4. Step 4: Simplify right side
    2,806.62x = 4,905,280.16
  5. Step 5: Solve for x
    x = 4,905,280.16/2,806.62
  6. Step 6: Final answer
    x = 1,747.75

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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.