Home / 1,223.04-1,686.60-829.44

Finding the Fourth Proportional to 1,223.04, 1,686.60 and 829.44

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Solution

The fourth proportional to 1,223.04, 1,686.60 and 829.44 is: 1,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.04 : 1,686.60 = 829.44 : x
  2. Step 2: Convert to fraction form
    1,223.04/1,686.60 = 829.44/x
  3. Step 3: Cross multiply
    1,223.04x = 1,686.60 × 829.44
  4. Step 4: Simplify right side
    1,223.04x = 1,398,933.50
  5. Step 5: Solve for x
    x = 1,398,933.50/1,223.04
  6. Step 6: Final answer
    x = 1,143.82

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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.