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Finding the Fourth Proportional to 3,762.65, 5,642.73 and 1,570.79

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Solution

The fourth proportional to 3,762.65, 5,642.73 and 1,570.79 is: 2,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.65 : 5,642.73 = 1,570.79 : x
  2. Step 2: Convert to fraction form
    3,762.65/5,642.73 = 1,570.79/x
  3. Step 3: Cross multiply
    3,762.65x = 5,642.73 × 1,570.79
  4. Step 4: Simplify right side
    3,762.65x = 8,863,515.64
  5. Step 5: Solve for x
    x = 8,863,515.64/3,762.65
  6. Step 6: Final answer
    x = 2,355.66

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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.