Home / 1,905.31-2,628.74-1,065.90

Finding the Fourth Proportional to 1,905.31, 2,628.74 and 1,065.90

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Solution

The fourth proportional to 1,905.31, 2,628.74 and 1,065.90 is: 1,470.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.31 : 2,628.74 = 1,065.90 : x
  2. Step 2: Convert to fraction form
    1,905.31/2,628.74 = 1,065.90/x
  3. Step 3: Cross multiply
    1,905.31x = 2,628.74 × 1,065.90
  4. Step 4: Simplify right side
    1,905.31x = 2,801,973.97
  5. Step 5: Solve for x
    x = 2,801,973.97/1,905.31
  6. Step 6: Final answer
    x = 1,470.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.