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Finding the Fourth Proportional to 1,893.90, 2,835.21 and 1,409.10

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Solution

The fourth proportional to 1,893.90, 2,835.21 and 1,409.10 is: 2,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.90 : 2,835.21 = 1,409.10 : x
  2. Step 2: Convert to fraction form
    1,893.90/2,835.21 = 1,409.10/x
  3. Step 3: Cross multiply
    1,893.90x = 2,835.21 × 1,409.10
  4. Step 4: Simplify right side
    1,893.90x = 3,995,094.41
  5. Step 5: Solve for x
    x = 3,995,094.41/1,893.90
  6. Step 6: Final answer
    x = 2,109.45

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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.