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Finding the Fourth Proportional to 3,762.57, 5,641.81 and 2,987.55

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Solution

The fourth proportional to 3,762.57, 5,641.81 and 2,987.55 is: 4,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.57 : 5,641.81 = 2,987.55 : x
  2. Step 2: Convert to fraction form
    3,762.57/5,641.81 = 2,987.55/x
  3. Step 3: Cross multiply
    3,762.57x = 5,641.81 × 2,987.55
  4. Step 4: Simplify right side
    3,762.57x = 16,855,197.55
  5. Step 5: Solve for x
    x = 16,855,197.55/3,762.57
  6. Step 6: Final answer
    x = 4,479.70

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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.