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Finding the Fourth Proportional to 3,900.59, 5,851.80 and 2,668.58

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Solution

The fourth proportional to 3,900.59, 5,851.80 and 2,668.58 is: 4,003.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.59 : 5,851.80 = 2,668.58 : x
  2. Step 2: Convert to fraction form
    3,900.59/5,851.80 = 2,668.58/x
  3. Step 3: Cross multiply
    3,900.59x = 5,851.80 × 2,668.58
  4. Step 4: Simplify right side
    3,900.59x = 15,615,989.13
  5. Step 5: Solve for x
    x = 15,615,989.13/3,900.59
  6. Step 6: Final answer
    x = 4,003.50

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1.5x scale

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.