Home / 1,284.80-1,772.71-1,004.54

Finding the Fourth Proportional to 1,284.80, 1,772.71 and 1,004.54

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Solution

The fourth proportional to 1,284.80, 1,772.71 and 1,004.54 is: 1,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.80 : 1,772.71 = 1,004.54 : x
  2. Step 2: Convert to fraction form
    1,284.80/1,772.71 = 1,004.54/x
  3. Step 3: Cross multiply
    1,284.80x = 1,772.71 × 1,004.54
  4. Step 4: Simplify right side
    1,284.80x = 1,780,746.73
  5. Step 5: Solve for x
    x = 1,780,746.73/1,284.80
  6. Step 6: Final answer
    x = 1,386.02

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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.