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Finding the Fourth Proportional to 4,886.75, 7,330.01 and 1,189

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Solution

The fourth proportional to 4,886.75, 7,330.01 and 1,189 is: 1,783.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.75 : 7,330.01 = 1,189 : x
  2. Step 2: Convert to fraction form
    4,886.75/7,330.01 = 1,189/x
  3. Step 3: Cross multiply
    4,886.75x = 7,330.01 × 1,189
  4. Step 4: Simplify right side
    4,886.75x = 8,715,381.89
  5. Step 5: Solve for x
    x = 8,715,381.89/4,886.75
  6. Step 6: Final answer
    x = 1,783.47

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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.