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Finding the Fourth Proportional to 8,909.70, 13,362.72 and 3,066.77

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Solution

The fourth proportional to 8,909.70, 13,362.72 and 3,066.77 is: 4,599.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.70 : 13,362.72 = 3,066.77 : x
  2. Step 2: Convert to fraction form
    8,909.70/13,362.72 = 3,066.77/x
  3. Step 3: Cross multiply
    8,909.70x = 13,362.72 × 3,066.77
  4. Step 4: Simplify right side
    8,909.70x = 40,980,322.00
  5. Step 5: Solve for x
    x = 40,980,322.00/8,909.70
  6. Step 6: Final answer
    x = 4,599.52

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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.