Home / 2,923.24-4,035.21-1,978.57

Finding the Fourth Proportional to 2,923.24, 4,035.21 and 1,978.57

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Solution

The fourth proportional to 2,923.24, 4,035.21 and 1,978.57 is: 2,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.24 : 4,035.21 = 1,978.57 : x
  2. Step 2: Convert to fraction form
    2,923.24/4,035.21 = 1,978.57/x
  3. Step 3: Cross multiply
    2,923.24x = 4,035.21 × 1,978.57
  4. Step 4: Simplify right side
    2,923.24x = 7,983,945.45
  5. Step 5: Solve for x
    x = 7,983,945.45/2,923.24
  6. Step 6: Final answer
    x = 2,731.20

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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.