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Finding the Fourth Proportional to 8,762.16, 13,144.97 and 3,215.55

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Solution

The fourth proportional to 8,762.16, 13,144.97 and 3,215.55 is: 4,823.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.16 : 13,144.97 = 3,215.55 : x
  2. Step 2: Convert to fraction form
    8,762.16/13,144.97 = 3,215.55/x
  3. Step 3: Cross multiply
    8,762.16x = 13,144.97 × 3,215.55
  4. Step 4: Simplify right side
    8,762.16x = 42,268,292.21
  5. Step 5: Solve for x
    x = 42,268,292.21/8,762.16
  6. Step 6: Final answer
    x = 4,823.96

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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.