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Finding the Fourth Proportional to 9,792.09, 13,513.09 and 5,315.84

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Solution

The fourth proportional to 9,792.09, 13,513.09 and 5,315.84 is: 7,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,792.09 : 13,513.09 = 5,315.84 : x
  2. Step 2: Convert to fraction form
    9,792.09/13,513.09 = 5,315.84/x
  3. Step 3: Cross multiply
    9,792.09x = 13,513.09 × 5,315.84
  4. Step 4: Simplify right side
    9,792.09x = 71,833,424.35
  5. Step 5: Solve for x
    x = 71,833,424.35/9,792.09
  6. Step 6: Final answer
    x = 7,335.86

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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.