Home / 1,927.14-2,890.41-628.60

Finding the Fourth Proportional to 1,927.14, 2,890.41 and 628.60

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Solution

The fourth proportional to 1,927.14, 2,890.41 and 628.60 is: 942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.14 : 2,890.41 = 628.60 : x
  2. Step 2: Convert to fraction form
    1,927.14/2,890.41 = 628.60/x
  3. Step 3: Cross multiply
    1,927.14x = 2,890.41 × 628.60
  4. Step 4: Simplify right side
    1,927.14x = 1,816,911.73
  5. Step 5: Solve for x
    x = 1,816,911.73/1,927.14
  6. Step 6: Final answer
    x = 942.80

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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.