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Finding the Fourth Proportional to 3,885.94, 5,368.86 and 2,712.22

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Solution

The fourth proportional to 3,885.94, 5,368.86 and 2,712.22 is: 3,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.94 : 5,368.86 = 2,712.22 : x
  2. Step 2: Convert to fraction form
    3,885.94/5,368.86 = 2,712.22/x
  3. Step 3: Cross multiply
    3,885.94x = 5,368.86 × 2,712.22
  4. Step 4: Simplify right side
    3,885.94x = 14,561,529.47
  5. Step 5: Solve for x
    x = 14,561,529.47/3,885.94
  6. Step 6: Final answer
    x = 3,747.23

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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.