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Finding the Fourth Proportional to 9,360.92, 12,917.97 and 5,111.97

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Solution

The fourth proportional to 9,360.92, 12,917.97 and 5,111.97 is: 7,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.92 : 12,917.97 = 5,111.97 : x
  2. Step 2: Convert to fraction form
    9,360.92/12,917.97 = 5,111.97/x
  3. Step 3: Cross multiply
    9,360.92x = 12,917.97 × 5,111.97
  4. Step 4: Simplify right side
    9,360.92x = 66,036,275.10
  5. Step 5: Solve for x
    x = 66,036,275.10/9,360.92
  6. Step 6: Final answer
    x = 7,054.46

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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.