Home / 2,009.19-3,013.55-776.49

Finding the Fourth Proportional to 2,009.19, 3,013.55 and 776.49

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Solution

The fourth proportional to 2,009.19, 3,013.55 and 776.49 is: 1,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.19 : 3,013.55 = 776.49 : x
  2. Step 2: Convert to fraction form
    2,009.19/3,013.55 = 776.49/x
  3. Step 3: Cross multiply
    2,009.19x = 3,013.55 × 776.49
  4. Step 4: Simplify right side
    2,009.19x = 2,339,991.44
  5. Step 5: Solve for x
    x = 2,339,991.44/2,009.19
  6. Step 6: Final answer
    x = 1,164.64

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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.