Home / 1,211.74-1,817.60-1,152.71

Finding the Fourth Proportional to 1,211.74, 1,817.60 and 1,152.71

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Solution

The fourth proportional to 1,211.74, 1,817.60 and 1,152.71 is: 1,729.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.74 : 1,817.60 = 1,152.71 : x
  2. Step 2: Convert to fraction form
    1,211.74/1,817.60 = 1,152.71/x
  3. Step 3: Cross multiply
    1,211.74x = 1,817.60 × 1,152.71
  4. Step 4: Simplify right side
    1,211.74x = 2,095,165.70
  5. Step 5: Solve for x
    x = 2,095,165.70/1,211.74
  6. Step 6: Final answer
    x = 1,729.06

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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.