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Finding the Fourth Proportional to 7,185.28, 9,914.88 and 4,353.28

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Solution

The fourth proportional to 7,185.28, 9,914.88 and 4,353.28 is: 6,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.28 : 9,914.88 = 4,353.28 : x
  2. Step 2: Convert to fraction form
    7,185.28/9,914.88 = 4,353.28/x
  3. Step 3: Cross multiply
    7,185.28x = 9,914.88 × 4,353.28
  4. Step 4: Simplify right side
    7,185.28x = 43,162,248.81
  5. Step 5: Solve for x
    x = 43,162,248.81/7,185.28
  6. Step 6: Final answer
    x = 6,007.04

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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.