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Finding the Fourth Proportional to 8,610.84, 12,921.93 and 4,717.98

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Solution

The fourth proportional to 8,610.84, 12,921.93 and 4,717.98 is: 7,080.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.84 : 12,921.93 = 4,717.98 : x
  2. Step 2: Convert to fraction form
    8,610.84/12,921.93 = 4,717.98/x
  3. Step 3: Cross multiply
    8,610.84x = 12,921.93 × 4,717.98
  4. Step 4: Simplify right side
    8,610.84x = 60,965,407.30
  5. Step 5: Solve for x
    x = 60,965,407.30/8,610.84
  6. Step 6: Final answer
    x = 7,080.08

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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.