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Finding the Fourth Proportional to 9,354.92, 12,910.08 and 5,376.84

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Solution

The fourth proportional to 9,354.92, 12,910.08 and 5,376.84 is: 7,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,354.92 : 12,910.08 = 5,376.84 : x
  2. Step 2: Convert to fraction form
    9,354.92/12,910.08 = 5,376.84/x
  3. Step 3: Cross multiply
    9,354.92x = 12,910.08 × 5,376.84
  4. Step 4: Simplify right side
    9,354.92x = 69,415,434.55
  5. Step 5: Solve for x
    x = 69,415,434.55/9,354.92
  6. Step 6: Final answer
    x = 7,420.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.