Home / 3,957.12-5,461.08-2,188.74

Finding the Fourth Proportional to 3,957.12, 5,461.08 and 2,188.74

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Solution

The fourth proportional to 3,957.12, 5,461.08 and 2,188.74 is: 3,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.12 : 5,461.08 = 2,188.74 : x
  2. Step 2: Convert to fraction form
    3,957.12/5,461.08 = 2,188.74/x
  3. Step 3: Cross multiply
    3,957.12x = 5,461.08 × 2,188.74
  4. Step 4: Simplify right side
    3,957.12x = 11,952,884.24
  5. Step 5: Solve for x
    x = 11,952,884.24/3,957.12
  6. Step 6: Final answer
    x = 3,020.60

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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.