Home / 1,809.30-2,709.90-942.60

Finding the Fourth Proportional to 1,809.30, 2,709.90 and 942.60

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Solution

The fourth proportional to 1,809.30, 2,709.90 and 942.60 is: 1,411.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.30 : 2,709.90 = 942.60 : x
  2. Step 2: Convert to fraction form
    1,809.30/2,709.90 = 942.60/x
  3. Step 3: Cross multiply
    1,809.30x = 2,709.90 × 942.60
  4. Step 4: Simplify right side
    1,809.30x = 2,554,351.74
  5. Step 5: Solve for x
    x = 2,554,351.74/1,809.30
  6. Step 6: Final answer
    x = 1,411.79

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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.