Home / 1,268.96-1,752.72-919.04

Finding the Fourth Proportional to 1,268.96, 1,752.72 and 919.04

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Solution

The fourth proportional to 1,268.96, 1,752.72 and 919.04 is: 1,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.96 : 1,752.72 = 919.04 : x
  2. Step 2: Convert to fraction form
    1,268.96/1,752.72 = 919.04/x
  3. Step 3: Cross multiply
    1,268.96x = 1,752.72 × 919.04
  4. Step 4: Simplify right side
    1,268.96x = 1,610,819.79
  5. Step 5: Solve for x
    x = 1,610,819.79/1,268.96
  6. Step 6: Final answer
    x = 1,269.40

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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.