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Finding the Fourth Proportional to 3,746.04, 5,615.49 and 1,405.41

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Solution

The fourth proportional to 3,746.04, 5,615.49 and 1,405.41 is: 2,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,746.04 : 5,615.49 = 1,405.41 : x
  2. Step 2: Convert to fraction form
    3,746.04/5,615.49 = 1,405.41/x
  3. Step 3: Cross multiply
    3,746.04x = 5,615.49 × 1,405.41
  4. Step 4: Simplify right side
    3,746.04x = 7,892,065.80
  5. Step 5: Solve for x
    x = 7,892,065.80/3,746.04
  6. Step 6: Final answer
    x = 2,106.78

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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.