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Finding the Fourth Proportional to 7,903.24, 10,902.18 and 4,919.56

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Solution

The fourth proportional to 7,903.24, 10,902.18 and 4,919.56 is: 6,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.24 : 10,902.18 = 4,919.56 : x
  2. Step 2: Convert to fraction form
    7,903.24/10,902.18 = 4,919.56/x
  3. Step 3: Cross multiply
    7,903.24x = 10,902.18 × 4,919.56
  4. Step 4: Simplify right side
    7,903.24x = 53,633,928.64
  5. Step 5: Solve for x
    x = 53,633,928.64/7,903.24
  6. Step 6: Final answer
    x = 6,786.32

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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.