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Finding the Fourth Proportional to 3,090.91, 4,636.32 and 750.93

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Solution

The fourth proportional to 3,090.91, 4,636.32 and 750.93 is: 1,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.91 : 4,636.32 = 750.93 : x
  2. Step 2: Convert to fraction form
    3,090.91/4,636.32 = 750.93/x
  3. Step 3: Cross multiply
    3,090.91x = 4,636.32 × 750.93
  4. Step 4: Simplify right side
    3,090.91x = 3,481,548.02
  5. Step 5: Solve for x
    x = 3,481,548.02/3,090.91
  6. Step 6: Final answer
    x = 1,126.38

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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.