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Finding the Fourth Proportional to 2,011.44, 3,016.26 and 777.90

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Solution

The fourth proportional to 2,011.44, 3,016.26 and 777.90 is: 1,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.44 : 3,016.26 = 777.90 : x
  2. Step 2: Convert to fraction form
    2,011.44/3,016.26 = 777.90/x
  3. Step 3: Cross multiply
    2,011.44x = 3,016.26 × 777.90
  4. Step 4: Simplify right side
    2,011.44x = 2,346,348.65
  5. Step 5: Solve for x
    x = 2,346,348.65/2,011.44
  6. Step 6: Final answer
    x = 1,166.50

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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.