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Finding the Fourth Proportional to 3,537.76, 5,307.04 and 940.80

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Solution

The fourth proportional to 3,537.76, 5,307.04 and 940.80 is: 1,411.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,537.76 : 5,307.04 = 940.80 : x
  2. Step 2: Convert to fraction form
    3,537.76/5,307.04 = 940.80/x
  3. Step 3: Cross multiply
    3,537.76x = 5,307.04 × 940.80
  4. Step 4: Simplify right side
    3,537.76x = 4,992,863.23
  5. Step 5: Solve for x
    x = 4,992,863.23/3,537.76
  6. Step 6: Final answer
    x = 1,411.31

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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.