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Finding the Fourth Proportional to 4,984.74, 7,476.50 and 1,286.69

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Solution

The fourth proportional to 4,984.74, 7,476.50 and 1,286.69 is: 1,929.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.74 : 7,476.50 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    4,984.74/7,476.50 = 1,286.69/x
  3. Step 3: Cross multiply
    4,984.74x = 7,476.50 × 1,286.69
  4. Step 4: Simplify right side
    4,984.74x = 9,619,903.62
  5. Step 5: Solve for x
    x = 9,619,903.62/4,984.74
  6. Step 6: Final answer
    x = 1,929.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.