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Finding the Fourth Proportional to 3,116.48, 4,674.58 and 776.49

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Solution

The fourth proportional to 3,116.48, 4,674.58 and 776.49 is: 1,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.48 : 4,674.58 = 776.49 : x
  2. Step 2: Convert to fraction form
    3,116.48/4,674.58 = 776.49/x
  3. Step 3: Cross multiply
    3,116.48x = 4,674.58 × 776.49
  4. Step 4: Simplify right side
    3,116.48x = 3,629,745.15
  5. Step 5: Solve for x
    x = 3,629,745.15/3,116.48
  6. Step 6: Final answer
    x = 1,164.70

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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.