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Finding the Fourth Proportional to 4,759.91, 7,139.87 and 1,297.67

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Solution

The fourth proportional to 4,759.91, 7,139.87 and 1,297.67 is: 1,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.91 : 7,139.87 = 1,297.67 : x
  2. Step 2: Convert to fraction form
    4,759.91/7,139.87 = 1,297.67/x
  3. Step 3: Cross multiply
    4,759.91x = 7,139.87 × 1,297.67
  4. Step 4: Simplify right side
    4,759.91x = 9,265,188.61
  5. Step 5: Solve for x
    x = 9,265,188.61/4,759.91
  6. Step 6: Final answer
    x = 1,946.51

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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.