Home / 4,749.30-7,123.95-1,286.55

Finding the Fourth Proportional to 4,749.30, 7,123.95 and 1,286.55

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Solution

The fourth proportional to 4,749.30, 7,123.95 and 1,286.55 is: 1,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.30 : 7,123.95 = 1,286.55 : x
  2. Step 2: Convert to fraction form
    4,749.30/7,123.95 = 1,286.55/x
  3. Step 3: Cross multiply
    4,749.30x = 7,123.95 × 1,286.55
  4. Step 4: Simplify right side
    4,749.30x = 9,165,317.87
  5. Step 5: Solve for x
    x = 9,165,317.87/4,749.30
  6. Step 6: Final answer
    x = 1,929.83

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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.