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Finding the Fourth Proportional to 8,674.99, 13,010.53 and 3,990.50

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Solution

The fourth proportional to 8,674.99, 13,010.53 and 3,990.50 is: 5,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.99 : 13,010.53 = 3,990.50 : x
  2. Step 2: Convert to fraction form
    8,674.99/13,010.53 = 3,990.50/x
  3. Step 3: Cross multiply
    8,674.99x = 13,010.53 × 3,990.50
  4. Step 4: Simplify right side
    8,674.99x = 51,918,491.78
  5. Step 5: Solve for x
    x = 51,918,491.78/8,674.99
  6. Step 6: Final answer
    x = 5,984.85

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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.