Home / 3,128.88-4,318.54-2,066.82

Finding the Fourth Proportional to 3,128.88, 4,318.54 and 2,066.82

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Solution

The fourth proportional to 3,128.88, 4,318.54 and 2,066.82 is: 2,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.88 : 4,318.54 = 2,066.82 : x
  2. Step 2: Convert to fraction form
    3,128.88/4,318.54 = 2,066.82/x
  3. Step 3: Cross multiply
    3,128.88x = 4,318.54 × 2,066.82
  4. Step 4: Simplify right side
    3,128.88x = 8,925,644.84
  5. Step 5: Solve for x
    x = 8,925,644.84/3,128.88
  6. Step 6: Final answer
    x = 2,852.66

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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.