Home / 1,432.63-1,974.75-1,078.03

Finding the Fourth Proportional to 1,432.63, 1,974.75 and 1,078.03

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Solution

The fourth proportional to 1,432.63, 1,974.75 and 1,078.03 is: 1,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.63 : 1,974.75 = 1,078.03 : x
  2. Step 2: Convert to fraction form
    1,432.63/1,974.75 = 1,078.03/x
  3. Step 3: Cross multiply
    1,432.63x = 1,974.75 × 1,078.03
  4. Step 4: Simplify right side
    1,432.63x = 2,128,839.74
  5. Step 5: Solve for x
    x = 2,128,839.74/1,432.63
  6. Step 6: Final answer
    x = 1,485.97

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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.