Home / 1,443.70-2,161.78-948.54

Finding the Fourth Proportional to 1,443.70, 2,161.78 and 948.54

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Solution

The fourth proportional to 1,443.70, 2,161.78 and 948.54 is: 1,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.70 : 2,161.78 = 948.54 : x
  2. Step 2: Convert to fraction form
    1,443.70/2,161.78 = 948.54/x
  3. Step 3: Cross multiply
    1,443.70x = 2,161.78 × 948.54
  4. Step 4: Simplify right side
    1,443.70x = 2,050,534.80
  5. Step 5: Solve for x
    x = 2,050,534.80/1,443.70
  6. Step 6: Final answer
    x = 1,420.33

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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.