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Finding the Fourth Proportional to 9,333.53, 12,879.66 and 5,141.78

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Solution

The fourth proportional to 9,333.53, 12,879.66 and 5,141.78 is: 7,095.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,333.53 : 12,879.66 = 5,141.78 : x
  2. Step 2: Convert to fraction form
    9,333.53/12,879.66 = 5,141.78/x
  3. Step 3: Cross multiply
    9,333.53x = 12,879.66 × 5,141.78
  4. Step 4: Simplify right side
    9,333.53x = 66,224,378.19
  5. Step 5: Solve for x
    x = 66,224,378.19/9,333.53
  6. Step 6: Final answer
    x = 7,095.32

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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.