Home / 4,748.66-7,122.99-1,286.42

Finding the Fourth Proportional to 4,748.66, 7,122.99 and 1,286.42

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Solution

The fourth proportional to 4,748.66, 7,122.99 and 1,286.42 is: 1,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,748.66 : 7,122.99 = 1,286.42 : x
  2. Step 2: Convert to fraction form
    4,748.66/7,122.99 = 1,286.42/x
  3. Step 3: Cross multiply
    4,748.66x = 7,122.99 × 1,286.42
  4. Step 4: Simplify right side
    4,748.66x = 9,163,156.80
  5. Step 5: Solve for x
    x = 9,163,156.80/4,748.66
  6. Step 6: Final answer
    x = 1,929.63

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Half scale
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Double scale
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Similar ratio
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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.