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Finding the Fourth Proportional to 2,858.52, 4,260.75 and 2,763.75

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Solution

The fourth proportional to 2,858.52, 4,260.75 and 2,763.75 is: 4,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.52 : 4,260.75 = 2,763.75 : x
  2. Step 2: Convert to fraction form
    2,858.52/4,260.75 = 2,763.75/x
  3. Step 3: Cross multiply
    2,858.52x = 4,260.75 × 2,763.75
  4. Step 4: Simplify right side
    2,858.52x = 11,775,647.81
  5. Step 5: Solve for x
    x = 11,775,647.81/2,858.52
  6. Step 6: Final answer
    x = 4,119.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.