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Finding the Fourth Proportional to 3,708.64, 5,117.86 and 2,030

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Solution

The fourth proportional to 3,708.64, 5,117.86 and 2,030 is: 2,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.64 : 5,117.86 = 2,030 : x
  2. Step 2: Convert to fraction form
    3,708.64/5,117.86 = 2,030/x
  3. Step 3: Cross multiply
    3,708.64x = 5,117.86 × 2,030
  4. Step 4: Simplify right side
    3,708.64x = 10,389,255.80
  5. Step 5: Solve for x
    x = 10,389,255.80/3,708.64
  6. Step 6: Final answer
    x = 2,801.37

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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.