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Finding the Fourth Proportional to 5,387.94, 7,435.37 and 3,149.41

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Solution

The fourth proportional to 5,387.94, 7,435.37 and 3,149.41 is: 4,346.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.94 : 7,435.37 = 3,149.41 : x
  2. Step 2: Convert to fraction form
    5,387.94/7,435.37 = 3,149.41/x
  3. Step 3: Cross multiply
    5,387.94x = 7,435.37 × 3,149.41
  4. Step 4: Simplify right side
    5,387.94x = 23,417,028.63
  5. Step 5: Solve for x
    x = 23,417,028.63/5,387.94
  6. Step 6: Final answer
    x = 4,346.19

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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.