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Finding the Fourth Proportional to 3,366.56, 4,647.12 and 1,969.76

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Solution

The fourth proportional to 3,366.56, 4,647.12 and 1,969.76 is: 2,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,366.56 : 4,647.12 = 1,969.76 : x
  2. Step 2: Convert to fraction form
    3,366.56/4,647.12 = 1,969.76/x
  3. Step 3: Cross multiply
    3,366.56x = 4,647.12 × 1,969.76
  4. Step 4: Simplify right side
    3,366.56x = 9,153,711.09
  5. Step 5: Solve for x
    x = 9,153,711.09/3,366.56
  6. Step 6: Final answer
    x = 2,719.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.