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Finding the Fourth Proportional to 3,085.22, 4,627.83 and 776.72

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Solution

The fourth proportional to 3,085.22, 4,627.83 and 776.72 is: 1,165.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.22 : 4,627.83 = 776.72 : x
  2. Step 2: Convert to fraction form
    3,085.22/4,627.83 = 776.72/x
  3. Step 3: Cross multiply
    3,085.22x = 4,627.83 × 776.72
  4. Step 4: Simplify right side
    3,085.22x = 3,594,539.69
  5. Step 5: Solve for x
    x = 3,594,539.69/3,085.22
  6. Step 6: Final answer
    x = 1,165.08

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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.