Home / 1,916.69-2,869.46-1,425.28

Finding the Fourth Proportional to 1,916.69, 2,869.46 and 1,425.28

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Solution

The fourth proportional to 1,916.69, 2,869.46 and 1,425.28 is: 2,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.69 : 2,869.46 = 1,425.28 : x
  2. Step 2: Convert to fraction form
    1,916.69/2,869.46 = 1,425.28/x
  3. Step 3: Cross multiply
    1,916.69x = 2,869.46 × 1,425.28
  4. Step 4: Simplify right side
    1,916.69x = 4,089,783.95
  5. Step 5: Solve for x
    x = 4,089,783.95/1,916.69
  6. Step 6: Final answer
    x = 2,133.77

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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.