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Finding the Fourth Proportional to 9,728.94, 13,425.45 and 5,480.70

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Solution

The fourth proportional to 9,728.94, 13,425.45 and 5,480.70 is: 7,563.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.94 : 13,425.45 = 5,480.70 : x
  2. Step 2: Convert to fraction form
    9,728.94/13,425.45 = 5,480.70/x
  3. Step 3: Cross multiply
    9,728.94x = 13,425.45 × 5,480.70
  4. Step 4: Simplify right side
    9,728.94x = 73,580,792.92
  5. Step 5: Solve for x
    x = 73,580,792.92/9,728.94
  6. Step 6: Final answer
    x = 7,563.08

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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.