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Finding the Fourth Proportional to 8,556.48, 12,836.16 and 3,008.40

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Solution

The fourth proportional to 8,556.48, 12,836.16 and 3,008.40 is: 4,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.48 : 12,836.16 = 3,008.40 : x
  2. Step 2: Convert to fraction form
    8,556.48/12,836.16 = 3,008.40/x
  3. Step 3: Cross multiply
    8,556.48x = 12,836.16 × 3,008.40
  4. Step 4: Simplify right side
    8,556.48x = 38,616,303.74
  5. Step 5: Solve for x
    x = 38,616,303.74/8,556.48
  6. Step 6: Final answer
    x = 4,513.11

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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.