Home / 3,109.87-4,291.62-1,712.62

Finding the Fourth Proportional to 3,109.87, 4,291.62 and 1,712.62

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Solution

The fourth proportional to 3,109.87, 4,291.62 and 1,712.62 is: 2,363.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.87 : 4,291.62 = 1,712.62 : x
  2. Step 2: Convert to fraction form
    3,109.87/4,291.62 = 1,712.62/x
  3. Step 3: Cross multiply
    3,109.87x = 4,291.62 × 1,712.62
  4. Step 4: Simplify right side
    3,109.87x = 7,349,914.24
  5. Step 5: Solve for x
    x = 7,349,914.24/3,109.87
  6. Step 6: Final answer
    x = 2,363.42

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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.