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Finding the Fourth Proportional to 3,843.65, 5,765.47 and 1,762.28

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Solution

The fourth proportional to 3,843.65, 5,765.47 and 1,762.28 is: 2,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.65 : 5,765.47 = 1,762.28 : x
  2. Step 2: Convert to fraction form
    3,843.65/5,765.47 = 1,762.28/x
  3. Step 3: Cross multiply
    3,843.65x = 5,765.47 × 1,762.28
  4. Step 4: Simplify right side
    3,843.65x = 10,160,339.24
  5. Step 5: Solve for x
    x = 10,160,339.24/3,843.65
  6. Step 6: Final answer
    x = 2,643.41

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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.