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Finding the Fourth Proportional to 8,909.99, 13,366.80 and 3,065.84

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Solution

The fourth proportional to 8,909.99, 13,366.80 and 3,065.84 is: 4,599.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.99 : 13,366.80 = 3,065.84 : x
  2. Step 2: Convert to fraction form
    8,909.99/13,366.80 = 3,065.84/x
  3. Step 3: Cross multiply
    8,909.99x = 13,366.80 × 3,065.84
  4. Step 4: Simplify right side
    8,909.99x = 40,980,403.28
  5. Step 5: Solve for x
    x = 40,980,403.28/8,909.99
  6. Step 6: Final answer
    x = 4,599.38

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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.