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Finding the Fourth Proportional to 3,505, 5,258.51 and 1,039.87

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Solution

The fourth proportional to 3,505, 5,258.51 and 1,039.87 is: 1,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505 : 5,258.51 = 1,039.87 : x
  2. Step 2: Convert to fraction form
    3,505/5,258.51 = 1,039.87/x
  3. Step 3: Cross multiply
    3,505x = 5,258.51 × 1,039.87
  4. Step 4: Simplify right side
    3,505x = 5,468,166.79
  5. Step 5: Solve for x
    x = 5,468,166.79/3,505
  6. Step 6: Final answer
    x = 1,560.10

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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.