Home / 1,228.02-1,839.52-1,021.92

Finding the Fourth Proportional to 1,228.02, 1,839.52 and 1,021.92

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Solution

The fourth proportional to 1,228.02, 1,839.52 and 1,021.92 is: 1,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.02 : 1,839.52 = 1,021.92 : x
  2. Step 2: Convert to fraction form
    1,228.02/1,839.52 = 1,021.92/x
  3. Step 3: Cross multiply
    1,228.02x = 1,839.52 × 1,021.92
  4. Step 4: Simplify right side
    1,228.02x = 1,879,844.32
  5. Step 5: Solve for x
    x = 1,879,844.32/1,228.02
  6. Step 6: Final answer
    x = 1,530.80

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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.