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Finding the Fourth Proportional to 4,909.64, 7,358.22 and 2,309

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Solution

The fourth proportional to 4,909.64, 7,358.22 and 2,309 is: 3,460.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.64 : 7,358.22 = 2,309 : x
  2. Step 2: Convert to fraction form
    4,909.64/7,358.22 = 2,309/x
  3. Step 3: Cross multiply
    4,909.64x = 7,358.22 × 2,309
  4. Step 4: Simplify right side
    4,909.64x = 16,990,129.98
  5. Step 5: Solve for x
    x = 16,990,129.98/4,909.64
  6. Step 6: Final answer
    x = 3,460.57

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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.