Home / 3,109.85-4,291.67-1,693.61

Finding the Fourth Proportional to 3,109.85, 4,291.67 and 1,693.61

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Solution

The fourth proportional to 3,109.85, 4,291.67 and 1,693.61 is: 2,337.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.85 : 4,291.67 = 1,693.61 : x
  2. Step 2: Convert to fraction form
    3,109.85/4,291.67 = 1,693.61/x
  3. Step 3: Cross multiply
    3,109.85x = 4,291.67 × 1,693.61
  4. Step 4: Simplify right side
    3,109.85x = 7,268,415.23
  5. Step 5: Solve for x
    x = 7,268,415.23/3,109.85
  6. Step 6: Final answer
    x = 2,337.22

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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.