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Finding the Fourth Proportional to 9,289.72, 13,924.78 and 4,355.32

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Solution

The fourth proportional to 9,289.72, 13,924.78 and 4,355.32 is: 6,528.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.72 : 13,924.78 = 4,355.32 : x
  2. Step 2: Convert to fraction form
    9,289.72/13,924.78 = 4,355.32/x
  3. Step 3: Cross multiply
    9,289.72x = 13,924.78 × 4,355.32
  4. Step 4: Simplify right side
    9,289.72x = 60,646,872.83
  5. Step 5: Solve for x
    x = 60,646,872.83/9,289.72
  6. Step 6: Final answer
    x = 6,528.39

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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.