Home / 3,748.65-5,621.99-1,115.45

Finding the Fourth Proportional to 3,748.65, 5,621.99 and 1,115.45

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Solution

The fourth proportional to 3,748.65, 5,621.99 and 1,115.45 is: 1,672.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.65 : 5,621.99 = 1,115.45 : x
  2. Step 2: Convert to fraction form
    3,748.65/5,621.99 = 1,115.45/x
  3. Step 3: Cross multiply
    3,748.65x = 5,621.99 × 1,115.45
  4. Step 4: Simplify right side
    3,748.65x = 6,271,020.64
  5. Step 5: Solve for x
    x = 6,271,020.64/3,748.65
  6. Step 6: Final answer
    x = 1,672.87

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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.