Home / 3,111.60-4,294.74-1,933.56

Finding the Fourth Proportional to 3,111.60, 4,294.74 and 1,933.56

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Solution

The fourth proportional to 3,111.60, 4,294.74 and 1,933.56 is: 2,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.60 : 4,294.74 = 1,933.56 : x
  2. Step 2: Convert to fraction form
    3,111.60/4,294.74 = 1,933.56/x
  3. Step 3: Cross multiply
    3,111.60x = 4,294.74 × 1,933.56
  4. Step 4: Simplify right side
    3,111.60x = 8,304,137.47
  5. Step 5: Solve for x
    x = 8,304,137.47/3,111.60
  6. Step 6: Final answer
    x = 2,668.77

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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.