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Finding the Fourth Proportional to 2,783.94, 3,837.40 and 1,887.40

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Solution

The fourth proportional to 2,783.94, 3,837.40 and 1,887.40 is: 2,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.94 : 3,837.40 = 1,887.40 : x
  2. Step 2: Convert to fraction form
    2,783.94/3,837.40 = 1,887.40/x
  3. Step 3: Cross multiply
    2,783.94x = 3,837.40 × 1,887.40
  4. Step 4: Simplify right side
    2,783.94x = 7,242,708.76
  5. Step 5: Solve for x
    x = 7,242,708.76/2,783.94
  6. Step 6: Final answer
    x = 2,601.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.