Home / 4,816.50-6,647.31-2,720.76

Finding the Fourth Proportional to 4,816.50, 6,647.31 and 2,720.76

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Solution

The fourth proportional to 4,816.50, 6,647.31 and 2,720.76 is: 3,754.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,816.50 : 6,647.31 = 2,720.76 : x
  2. Step 2: Convert to fraction form
    4,816.50/6,647.31 = 2,720.76/x
  3. Step 3: Cross multiply
    4,816.50x = 6,647.31 × 2,720.76
  4. Step 4: Simplify right side
    4,816.50x = 18,085,735.16
  5. Step 5: Solve for x
    x = 18,085,735.16/4,816.50
  6. Step 6: Final answer
    x = 3,754.95

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Half scale
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Double scale
Find fourth proportional to 4,817.50, 6,648.69 and 2,721.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.