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Finding the Fourth Proportional to 3,085.33, 4,627.99 and 776.83

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Solution

The fourth proportional to 3,085.33, 4,627.99 and 776.83 is: 1,165.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.33 : 4,627.99 = 776.83 : x
  2. Step 2: Convert to fraction form
    3,085.33/4,627.99 = 776.83/x
  3. Step 3: Cross multiply
    3,085.33x = 4,627.99 × 776.83
  4. Step 4: Simplify right side
    3,085.33x = 3,595,161.47
  5. Step 5: Solve for x
    x = 3,595,161.47/3,085.33
  6. Step 6: Final answer
    x = 1,165.24

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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.