Home / 3,109.77-4,291.38-1,693.43

Finding the Fourth Proportional to 3,109.77, 4,291.38 and 1,693.43

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Solution

The fourth proportional to 3,109.77, 4,291.38 and 1,693.43 is: 2,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.77 : 4,291.38 = 1,693.43 : x
  2. Step 2: Convert to fraction form
    3,109.77/4,291.38 = 1,693.43/x
  3. Step 3: Cross multiply
    3,109.77x = 4,291.38 × 1,693.43
  4. Step 4: Simplify right side
    3,109.77x = 7,267,151.63
  5. Step 5: Solve for x
    x = 7,267,151.63/3,109.77
  6. Step 6: Final answer
    x = 2,336.88

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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.