Home / 1,915.23-2,873.05-1,431.36

Finding the Fourth Proportional to 1,915.23, 2,873.05 and 1,431.36

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Solution

The fourth proportional to 1,915.23, 2,873.05 and 1,431.36 is: 2,147.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.23 : 2,873.05 = 1,431.36 : x
  2. Step 2: Convert to fraction form
    1,915.23/2,873.05 = 1,431.36/x
  3. Step 3: Cross multiply
    1,915.23x = 2,873.05 × 1,431.36
  4. Step 4: Simplify right side
    1,915.23x = 4,112,368.85
  5. Step 5: Solve for x
    x = 4,112,368.85/1,915.23
  6. Step 6: Final answer
    x = 2,147.19

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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.