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Finding the Fourth Proportional to 2,009.99, 3,012.93 and 776.93

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Solution

The fourth proportional to 2,009.99, 3,012.93 and 776.93 is: 1,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.99 : 3,012.93 = 776.93 : x
  2. Step 2: Convert to fraction form
    2,009.99/3,012.93 = 776.93/x
  3. Step 3: Cross multiply
    2,009.99x = 3,012.93 × 776.93
  4. Step 4: Simplify right side
    2,009.99x = 2,340,820.64
  5. Step 5: Solve for x
    x = 2,340,820.64/2,009.99
  6. Step 6: Final answer
    x = 1,164.59

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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.