Home / 1,769.41-2,647.80-1,664.31

Finding the Fourth Proportional to 1,769.41, 2,647.80 and 1,664.31

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Solution

The fourth proportional to 1,769.41, 2,647.80 and 1,664.31 is: 2,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.41 : 2,647.80 = 1,664.31 : x
  2. Step 2: Convert to fraction form
    1,769.41/2,647.80 = 1,664.31/x
  3. Step 3: Cross multiply
    1,769.41x = 2,647.80 × 1,664.31
  4. Step 4: Simplify right side
    1,769.41x = 4,406,769.95
  5. Step 5: Solve for x
    x = 4,406,769.95/1,769.41
  6. Step 6: Final answer
    x = 2,490.53

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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.