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Finding the Fourth Proportional to 3,762.74, 5,641.04 and 1,421.42

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Solution

The fourth proportional to 3,762.74, 5,641.04 and 1,421.42 is: 2,130.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.74 : 5,641.04 = 1,421.42 : x
  2. Step 2: Convert to fraction form
    3,762.74/5,641.04 = 1,421.42/x
  3. Step 3: Cross multiply
    3,762.74x = 5,641.04 × 1,421.42
  4. Step 4: Simplify right side
    3,762.74x = 8,018,277.23
  5. Step 5: Solve for x
    x = 8,018,277.23/3,762.74
  6. Step 6: Final answer
    x = 2,130.97

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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.