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Finding the Fourth Proportional to 8,666.99, 12,998.15 and 4,283.27

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Solution

The fourth proportional to 8,666.99, 12,998.15 and 4,283.27 is: 6,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.99 : 12,998.15 = 4,283.27 : x
  2. Step 2: Convert to fraction form
    8,666.99/12,998.15 = 4,283.27/x
  3. Step 3: Cross multiply
    8,666.99x = 12,998.15 × 4,283.27
  4. Step 4: Simplify right side
    8,666.99x = 55,674,585.95
  5. Step 5: Solve for x
    x = 55,674,585.95/8,666.99
  6. Step 6: Final answer
    x = 6,423.75

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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.