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Finding the Fourth Proportional to 3,651.88, 5,478.76 and 1,055.02

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Solution

The fourth proportional to 3,651.88, 5,478.76 and 1,055.02 is: 1,582.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.88 : 5,478.76 = 1,055.02 : x
  2. Step 2: Convert to fraction form
    3,651.88/5,478.76 = 1,055.02/x
  3. Step 3: Cross multiply
    3,651.88x = 5,478.76 × 1,055.02
  4. Step 4: Simplify right side
    3,651.88x = 5,780,201.38
  5. Step 5: Solve for x
    x = 5,780,201.38/3,651.88
  6. Step 6: Final answer
    x = 1,582.80

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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.