Home / 1,550.47-2,138.41-1,019.90

Finding the Fourth Proportional to 1,550.47, 2,138.41 and 1,019.90

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Solution

The fourth proportional to 1,550.47, 2,138.41 and 1,019.90 is: 1,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.47 : 2,138.41 = 1,019.90 : x
  2. Step 2: Convert to fraction form
    1,550.47/2,138.41 = 1,019.90/x
  3. Step 3: Cross multiply
    1,550.47x = 2,138.41 × 1,019.90
  4. Step 4: Simplify right side
    1,550.47x = 2,180,951.12
  5. Step 5: Solve for x
    x = 2,180,951.12/1,550.47
  6. Step 6: Final answer
    x = 1,406.64

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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.