Home / 2,669.78-4,004.70-1,284.20

Finding the Fourth Proportional to 2,669.78, 4,004.70 and 1,284.20

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Solution

The fourth proportional to 2,669.78, 4,004.70 and 1,284.20 is: 1,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.78 : 4,004.70 = 1,284.20 : x
  2. Step 2: Convert to fraction form
    2,669.78/4,004.70 = 1,284.20/x
  3. Step 3: Cross multiply
    2,669.78x = 4,004.70 × 1,284.20
  4. Step 4: Simplify right side
    2,669.78x = 5,142,835.74
  5. Step 5: Solve for x
    x = 5,142,835.74/2,669.78
  6. Step 6: Final answer
    x = 1,926.31

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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.