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Finding the Fourth Proportional to 9,272.32, 13,879.12 and 7,328.32

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Solution

The fourth proportional to 9,272.32, 13,879.12 and 7,328.32 is: 10,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.32 : 13,879.12 = 7,328.32 : x
  2. Step 2: Convert to fraction form
    9,272.32/13,879.12 = 7,328.32/x
  3. Step 3: Cross multiply
    9,272.32x = 13,879.12 × 7,328.32
  4. Step 4: Simplify right side
    9,272.32x = 101,710,632.68
  5. Step 5: Solve for x
    x = 101,710,632.68/9,272.32
  6. Step 6: Final answer
    x = 10,969.28

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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.