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Finding the Fourth Proportional to 4,886.53, 7,330 and 1,423.78

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Solution

The fourth proportional to 4,886.53, 7,330 and 1,423.78 is: 2,135.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.53 : 7,330 = 1,423.78 : x
  2. Step 2: Convert to fraction form
    4,886.53/7,330 = 1,423.78/x
  3. Step 3: Cross multiply
    4,886.53x = 7,330 × 1,423.78
  4. Step 4: Simplify right side
    4,886.53x = 10,436,307.40
  5. Step 5: Solve for x
    x = 10,436,307.40/4,886.53
  6. Step 6: Final answer
    x = 2,135.73

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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.