Home / 1,933.88-2,669.18-1,188.47

Finding the Fourth Proportional to 1,933.88, 2,669.18 and 1,188.47

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Solution

The fourth proportional to 1,933.88, 2,669.18 and 1,188.47 is: 1,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,933.88 : 2,669.18 = 1,188.47 : x
  2. Step 2: Convert to fraction form
    1,933.88/2,669.18 = 1,188.47/x
  3. Step 3: Cross multiply
    1,933.88x = 2,669.18 × 1,188.47
  4. Step 4: Simplify right side
    1,933.88x = 3,172,240.35
  5. Step 5: Solve for x
    x = 3,172,240.35/1,933.88
  6. Step 6: Final answer
    x = 1,640.35

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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.