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Finding the Fourth Proportional to 3,485.79, 4,810.50 and 1,914.03

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Solution

The fourth proportional to 3,485.79, 4,810.50 and 1,914.03 is: 2,641.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.79 : 4,810.50 = 1,914.03 : x
  2. Step 2: Convert to fraction form
    3,485.79/4,810.50 = 1,914.03/x
  3. Step 3: Cross multiply
    3,485.79x = 4,810.50 × 1,914.03
  4. Step 4: Simplify right side
    3,485.79x = 9,207,441.32
  5. Step 5: Solve for x
    x = 9,207,441.32/3,485.79
  6. Step 6: Final answer
    x = 2,641.42

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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.