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Finding the Fourth Proportional to 3,347.90, 4,619.96 and 1,855.88

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Solution

The fourth proportional to 3,347.90, 4,619.96 and 1,855.88 is: 2,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.90 : 4,619.96 = 1,855.88 : x
  2. Step 2: Convert to fraction form
    3,347.90/4,619.96 = 1,855.88/x
  3. Step 3: Cross multiply
    3,347.90x = 4,619.96 × 1,855.88
  4. Step 4: Simplify right side
    3,347.90x = 8,574,091.36
  5. Step 5: Solve for x
    x = 8,574,091.36/3,347.90
  6. Step 6: Final answer
    x = 2,561.04

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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.