Home / 1,905.50-2,630.67-1,438.94

Finding the Fourth Proportional to 1,905.50, 2,630.67 and 1,438.94

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Solution

The fourth proportional to 1,905.50, 2,630.67 and 1,438.94 is: 1,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.50 : 2,630.67 = 1,438.94 : x
  2. Step 2: Convert to fraction form
    1,905.50/2,630.67 = 1,438.94/x
  3. Step 3: Cross multiply
    1,905.50x = 2,630.67 × 1,438.94
  4. Step 4: Simplify right side
    1,905.50x = 3,785,376.29
  5. Step 5: Solve for x
    x = 3,785,376.29/1,905.50
  6. Step 6: Final answer
    x = 1,986.55

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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.