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Finding the Fourth Proportional to 4,965.77, 7,445.72 and 2,191.05

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Solution

The fourth proportional to 4,965.77, 7,445.72 and 2,191.05 is: 3,285.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,965.77 : 7,445.72 = 2,191.05 : x
  2. Step 2: Convert to fraction form
    4,965.77/7,445.72 = 2,191.05/x
  3. Step 3: Cross multiply
    4,965.77x = 7,445.72 × 2,191.05
  4. Step 4: Simplify right side
    4,965.77x = 16,313,950.28
  5. Step 5: Solve for x
    x = 16,313,950.28/4,965.77
  6. Step 6: Final answer
    x = 3,285.28

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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.