Home / 3,149.61-4,346.63-1,805.28

Finding the Fourth Proportional to 3,149.61, 4,346.63 and 1,805.28

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Solution

The fourth proportional to 3,149.61, 4,346.63 and 1,805.28 is: 2,491.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.61 : 4,346.63 = 1,805.28 : x
  2. Step 2: Convert to fraction form
    3,149.61/4,346.63 = 1,805.28/x
  3. Step 3: Cross multiply
    3,149.61x = 4,346.63 × 1,805.28
  4. Step 4: Simplify right side
    3,149.61x = 7,846,884.21
  5. Step 5: Solve for x
    x = 7,846,884.21/3,149.61
  6. Step 6: Final answer
    x = 2,491.38

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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.