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Finding the Fourth Proportional to 8,889.99, 12,268.16 and 4,911.09

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Solution

The fourth proportional to 8,889.99, 12,268.16 and 4,911.09 is: 6,777.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.99 : 12,268.16 = 4,911.09 : x
  2. Step 2: Convert to fraction form
    8,889.99/12,268.16 = 4,911.09/x
  3. Step 3: Cross multiply
    8,889.99x = 12,268.16 × 4,911.09
  4. Step 4: Simplify right side
    8,889.99x = 60,249,988.83
  5. Step 5: Solve for x
    x = 60,249,988.83/8,889.99
  6. Step 6: Final answer
    x = 6,777.29

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1.5x scale

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.