Home / 3,885.96-5,365.32-2,988.12

Finding the Fourth Proportional to 3,885.96, 5,365.32 and 2,988.12

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Solution

The fourth proportional to 3,885.96, 5,365.32 and 2,988.12 is: 4,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.96 : 5,365.32 = 2,988.12 : x
  2. Step 2: Convert to fraction form
    3,885.96/5,365.32 = 2,988.12/x
  3. Step 3: Cross multiply
    3,885.96x = 5,365.32 × 2,988.12
  4. Step 4: Simplify right side
    3,885.96x = 16,032,220.00
  5. Step 5: Solve for x
    x = 16,032,220.00/3,885.96
  6. Step 6: Final answer
    x = 4,125.68

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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.