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Finding the Fourth Proportional to 2,670.99, 4,007.22 and 1,111.73

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Solution

The fourth proportional to 2,670.99, 4,007.22 and 1,111.73 is: 1,667.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.99 : 4,007.22 = 1,111.73 : x
  2. Step 2: Convert to fraction form
    2,670.99/4,007.22 = 1,111.73/x
  3. Step 3: Cross multiply
    2,670.99x = 4,007.22 × 1,111.73
  4. Step 4: Simplify right side
    2,670.99x = 4,454,928.74
  5. Step 5: Solve for x
    x = 4,454,928.74/2,670.99
  6. Step 6: Final answer
    x = 1,667.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.