Home / 1,328.37-1,995.41-1,284.63

Finding the Fourth Proportional to 1,328.37, 1,995.41 and 1,284.63

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Solution

The fourth proportional to 1,328.37, 1,995.41 and 1,284.63 is: 1,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.37 : 1,995.41 = 1,284.63 : x
  2. Step 2: Convert to fraction form
    1,328.37/1,995.41 = 1,284.63/x
  3. Step 3: Cross multiply
    1,328.37x = 1,995.41 × 1,284.63
  4. Step 4: Simplify right side
    1,328.37x = 2,563,372.50
  5. Step 5: Solve for x
    x = 2,563,372.50/1,328.37
  6. Step 6: Final answer
    x = 1,929.71

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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.