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Finding the Fourth Proportional to 3,756.65, 5,645.90 and 1,810.22

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Solution

The fourth proportional to 3,756.65, 5,645.90 and 1,810.22 is: 2,720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,756.65 : 5,645.90 = 1,810.22 : x
  2. Step 2: Convert to fraction form
    3,756.65/5,645.90 = 1,810.22/x
  3. Step 3: Cross multiply
    3,756.65x = 5,645.90 × 1,810.22
  4. Step 4: Simplify right side
    3,756.65x = 10,220,297.39
  5. Step 5: Solve for x
    x = 10,220,297.39/3,756.65
  6. Step 6: Final answer
    x = 2,720.59

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1.5x scale

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.