Home / 1,268.34-1,746.81-1,177.62

Finding the Fourth Proportional to 1,268.34, 1,746.81 and 1,177.62

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Solution

The fourth proportional to 1,268.34, 1,746.81 and 1,177.62 is: 1,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.34 : 1,746.81 = 1,177.62 : x
  2. Step 2: Convert to fraction form
    1,268.34/1,746.81 = 1,177.62/x
  3. Step 3: Cross multiply
    1,268.34x = 1,746.81 × 1,177.62
  4. Step 4: Simplify right side
    1,268.34x = 2,057,078.39
  5. Step 5: Solve for x
    x = 2,057,078.39/1,268.34
  6. Step 6: Final answer
    x = 1,621.87

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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.