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Finding the Fourth Proportional to 3,804.59, 5,256.97 and 3,140.28

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Solution

The fourth proportional to 3,804.59, 5,256.97 and 3,140.28 is: 4,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,804.59 : 5,256.97 = 3,140.28 : x
  2. Step 2: Convert to fraction form
    3,804.59/5,256.97 = 3,140.28/x
  3. Step 3: Cross multiply
    3,804.59x = 5,256.97 × 3,140.28
  4. Step 4: Simplify right side
    3,804.59x = 16,508,357.75
  5. Step 5: Solve for x
    x = 16,508,357.75/3,804.59
  6. Step 6: Final answer
    x = 4,339.06

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1.5x scale

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.