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Finding the Fourth Proportional to 3,688, 5,532.24 and 1,090.76

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Solution

The fourth proportional to 3,688, 5,532.24 and 1,090.76 is: 1,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688 : 5,532.24 = 1,090.76 : x
  2. Step 2: Convert to fraction form
    3,688/5,532.24 = 1,090.76/x
  3. Step 3: Cross multiply
    3,688x = 5,532.24 × 1,090.76
  4. Step 4: Simplify right side
    3,688x = 6,034,346.10
  5. Step 5: Solve for x
    x = 6,034,346.10/3,688
  6. Step 6: Final answer
    x = 1,636.21

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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.