Home / 1,945.76-2,912.16-1,872.32

Finding the Fourth Proportional to 1,945.76, 2,912.16 and 1,872.32

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Solution

The fourth proportional to 1,945.76, 2,912.16 and 1,872.32 is: 2,802.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.76 : 2,912.16 = 1,872.32 : x
  2. Step 2: Convert to fraction form
    1,945.76/2,912.16 = 1,872.32/x
  3. Step 3: Cross multiply
    1,945.76x = 2,912.16 × 1,872.32
  4. Step 4: Simplify right side
    1,945.76x = 5,452,495.41
  5. Step 5: Solve for x
    x = 5,452,495.41/1,945.76
  6. Step 6: Final answer
    x = 2,802.24

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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.