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Finding the Fourth Proportional to 2,969.16, 4,453.32 and 778.05

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Solution

The fourth proportional to 2,969.16, 4,453.32 and 778.05 is: 1,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.16 : 4,453.32 = 778.05 : x
  2. Step 2: Convert to fraction form
    2,969.16/4,453.32 = 778.05/x
  3. Step 3: Cross multiply
    2,969.16x = 4,453.32 × 778.05
  4. Step 4: Simplify right side
    2,969.16x = 3,464,905.63
  5. Step 5: Solve for x
    x = 3,464,905.63/2,969.16
  6. Step 6: Final answer
    x = 1,166.96

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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.