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Finding the Fourth Proportional to 4,909.70, 7,364.55 and 4,836.80

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Solution

The fourth proportional to 4,909.70, 7,364.55 and 4,836.80 is: 7,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.70 : 7,364.55 = 4,836.80 : x
  2. Step 2: Convert to fraction form
    4,909.70/7,364.55 = 4,836.80/x
  3. Step 3: Cross multiply
    4,909.70x = 7,364.55 × 4,836.80
  4. Step 4: Simplify right side
    4,909.70x = 35,620,855.44
  5. Step 5: Solve for x
    x = 35,620,855.44/4,909.70
  6. Step 6: Final answer
    x = 7,255.20

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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.