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Finding the Fourth Proportional to 8,646.48, 12,968.28 and 3,098.79

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Solution

The fourth proportional to 8,646.48, 12,968.28 and 3,098.79 is: 4,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.48 : 12,968.28 = 3,098.79 : x
  2. Step 2: Convert to fraction form
    8,646.48/12,968.28 = 3,098.79/x
  3. Step 3: Cross multiply
    8,646.48x = 12,968.28 × 3,098.79
  4. Step 4: Simplify right side
    8,646.48x = 40,185,976.38
  5. Step 5: Solve for x
    x = 40,185,976.38/8,646.48
  6. Step 6: Final answer
    x = 4,647.67

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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.