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Finding the Fourth Proportional to 3,717.52, 5,130.16 and 2,039

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Solution

The fourth proportional to 3,717.52, 5,130.16 and 2,039 is: 2,813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.52 : 5,130.16 = 2,039 : x
  2. Step 2: Convert to fraction form
    3,717.52/5,130.16 = 2,039/x
  3. Step 3: Cross multiply
    3,717.52x = 5,130.16 × 2,039
  4. Step 4: Simplify right side
    3,717.52x = 10,460,396.24
  5. Step 5: Solve for x
    x = 10,460,396.24/3,717.52
  6. Step 6: Final answer
    x = 2,813.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.