Home / 1,629.29-2,247.40-1,069.79

Finding the Fourth Proportional to 1,629.29, 2,247.40 and 1,069.79

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Solution

The fourth proportional to 1,629.29, 2,247.40 and 1,069.79 is: 1,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.29 : 2,247.40 = 1,069.79 : x
  2. Step 2: Convert to fraction form
    1,629.29/2,247.40 = 1,069.79/x
  3. Step 3: Cross multiply
    1,629.29x = 2,247.40 × 1,069.79
  4. Step 4: Simplify right side
    1,629.29x = 2,404,240.70
  5. Step 5: Solve for x
    x = 2,404,240.70/1,629.29
  6. Step 6: Final answer
    x = 1,475.64

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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.