Home / 3,109.82-4,291.35-1,712.57

Finding the Fourth Proportional to 3,109.82, 4,291.35 and 1,712.57

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Solution

The fourth proportional to 3,109.82, 4,291.35 and 1,712.57 is: 2,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.82 : 4,291.35 = 1,712.57 : x
  2. Step 2: Convert to fraction form
    3,109.82/4,291.35 = 1,712.57/x
  3. Step 3: Cross multiply
    3,109.82x = 4,291.35 × 1,712.57
  4. Step 4: Simplify right side
    3,109.82x = 7,349,230.82
  5. Step 5: Solve for x
    x = 7,349,230.82/3,109.82
  6. Step 6: Final answer
    x = 2,363.24

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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.