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Finding the Fourth Proportional to 9,354.76, 12,909.72 and 5,163.04

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Solution

The fourth proportional to 9,354.76, 12,909.72 and 5,163.04 is: 7,125.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,354.76 : 12,909.72 = 5,163.04 : x
  2. Step 2: Convert to fraction form
    9,354.76/12,909.72 = 5,163.04/x
  3. Step 3: Cross multiply
    9,354.76x = 12,909.72 × 5,163.04
  4. Step 4: Simplify right side
    9,354.76x = 66,653,400.75
  5. Step 5: Solve for x
    x = 66,653,400.75/9,354.76
  6. Step 6: Final answer
    x = 7,125.08

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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.