Home / 2,769.92-4,155.72-1,038.80

Finding the Fourth Proportional to 2,769.92, 4,155.72 and 1,038.80

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Solution

The fourth proportional to 2,769.92, 4,155.72 and 1,038.80 is: 1,558.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.92 : 4,155.72 = 1,038.80 : x
  2. Step 2: Convert to fraction form
    2,769.92/4,155.72 = 1,038.80/x
  3. Step 3: Cross multiply
    2,769.92x = 4,155.72 × 1,038.80
  4. Step 4: Simplify right side
    2,769.92x = 4,316,961.94
  5. Step 5: Solve for x
    x = 4,316,961.94/2,769.92
  6. Step 6: Final answer
    x = 1,558.52

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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.