Home / 3,147.94-4,342.89-1,903.78

Finding the Fourth Proportional to 3,147.94, 4,342.89 and 1,903.78

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Solution

The fourth proportional to 3,147.94, 4,342.89 and 1,903.78 is: 2,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.94 : 4,342.89 = 1,903.78 : x
  2. Step 2: Convert to fraction form
    3,147.94/4,342.89 = 1,903.78/x
  3. Step 3: Cross multiply
    3,147.94x = 4,342.89 × 1,903.78
  4. Step 4: Simplify right side
    3,147.94x = 8,267,907.12
  5. Step 5: Solve for x
    x = 8,267,907.12/3,147.94
  6. Step 6: Final answer
    x = 2,626.45

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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.