Home / 1,292.58-1,939.02-415.26

Finding the Fourth Proportional to 1,292.58, 1,939.02 and 415.26

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Solution

The fourth proportional to 1,292.58, 1,939.02 and 415.26 is: 622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.58 : 1,939.02 = 415.26 : x
  2. Step 2: Convert to fraction form
    1,292.58/1,939.02 = 415.26/x
  3. Step 3: Cross multiply
    1,292.58x = 1,939.02 × 415.26
  4. Step 4: Simplify right side
    1,292.58x = 805,197.45
  5. Step 5: Solve for x
    x = 805,197.45/1,292.58
  6. Step 6: Final answer
    x = 622.94

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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.