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Finding the Fourth Proportional to 8,718.21, 13,077.93 and 3,788.16

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Solution

The fourth proportional to 8,718.21, 13,077.93 and 3,788.16 is: 5,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.21 : 13,077.93 = 3,788.16 : x
  2. Step 2: Convert to fraction form
    8,718.21/13,077.93 = 3,788.16/x
  3. Step 3: Cross multiply
    8,718.21x = 13,077.93 × 3,788.16
  4. Step 4: Simplify right side
    8,718.21x = 49,541,291.31
  5. Step 5: Solve for x
    x = 49,541,291.31/8,718.21
  6. Step 6: Final answer
    x = 5,682.51

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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.