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Finding the Fourth Proportional to 8,973.76, 12,388.65 and 6,293.21

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Solution

The fourth proportional to 8,973.76, 12,388.65 and 6,293.21 is: 8,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.76 : 12,388.65 = 6,293.21 : x
  2. Step 2: Convert to fraction form
    8,973.76/12,388.65 = 6,293.21/x
  3. Step 3: Cross multiply
    8,973.76x = 12,388.65 × 6,293.21
  4. Step 4: Simplify right side
    8,973.76x = 77,964,282.66
  5. Step 5: Solve for x
    x = 77,964,282.66/8,973.76
  6. Step 6: Final answer
    x = 8,688.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.