Home / 2,089.81-3,134.67-1,211.77

Finding the Fourth Proportional to 2,089.81, 3,134.67 and 1,211.77

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Solution

The fourth proportional to 2,089.81, 3,134.67 and 1,211.77 is: 1,817.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.81 : 3,134.67 = 1,211.77 : x
  2. Step 2: Convert to fraction form
    2,089.81/3,134.67 = 1,211.77/x
  3. Step 3: Cross multiply
    2,089.81x = 3,134.67 × 1,211.77
  4. Step 4: Simplify right side
    2,089.81x = 3,798,499.07
  5. Step 5: Solve for x
    x = 3,798,499.07/2,089.81
  6. Step 6: Final answer
    x = 1,817.63

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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.