Home / 1,211.58-1,671.78-1,150.08

Finding the Fourth Proportional to 1,211.58, 1,671.78 and 1,150.08

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Solution

The fourth proportional to 1,211.58, 1,671.78 and 1,150.08 is: 1,586.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.58 : 1,671.78 = 1,150.08 : x
  2. Step 2: Convert to fraction form
    1,211.58/1,671.78 = 1,150.08/x
  3. Step 3: Cross multiply
    1,211.58x = 1,671.78 × 1,150.08
  4. Step 4: Simplify right side
    1,211.58x = 1,922,680.74
  5. Step 5: Solve for x
    x = 1,922,680.74/1,211.58
  6. Step 6: Final answer
    x = 1,586.92

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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.