Home / 1,969.12-2,957.19-1,812.64

Finding the Fourth Proportional to 1,969.12, 2,957.19 and 1,812.64

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Solution

The fourth proportional to 1,969.12, 2,957.19 and 1,812.64 is: 2,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.12 : 2,957.19 = 1,812.64 : x
  2. Step 2: Convert to fraction form
    1,969.12/2,957.19 = 1,812.64/x
  3. Step 3: Cross multiply
    1,969.12x = 2,957.19 × 1,812.64
  4. Step 4: Simplify right side
    1,969.12x = 5,360,320.88
  5. Step 5: Solve for x
    x = 5,360,320.88/1,969.12
  6. Step 6: Final answer
    x = 2,722.19

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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.