Home / 1,934.28-2,669.36-1,187.87

Finding the Fourth Proportional to 1,934.28, 2,669.36 and 1,187.87

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Solution

The fourth proportional to 1,934.28, 2,669.36 and 1,187.87 is: 1,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.28 : 2,669.36 = 1,187.87 : x
  2. Step 2: Convert to fraction form
    1,934.28/2,669.36 = 1,187.87/x
  3. Step 3: Cross multiply
    1,934.28x = 2,669.36 × 1,187.87
  4. Step 4: Simplify right side
    1,934.28x = 3,170,833.38
  5. Step 5: Solve for x
    x = 3,170,833.38/1,934.28
  6. Step 6: Final answer
    x = 1,639.28

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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.