Home / 3,957.40-5,457.22-3,072.88

Finding the Fourth Proportional to 3,957.40, 5,457.22 and 3,072.88

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Solution

The fourth proportional to 3,957.40, 5,457.22 and 3,072.88 is: 4,237.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.40 : 5,457.22 = 3,072.88 : x
  2. Step 2: Convert to fraction form
    3,957.40/5,457.22 = 3,072.88/x
  3. Step 3: Cross multiply
    3,957.40x = 5,457.22 × 3,072.88
  4. Step 4: Simplify right side
    3,957.40x = 16,769,382.19
  5. Step 5: Solve for x
    x = 16,769,382.19/3,957.40
  6. Step 6: Final answer
    x = 4,237.47

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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.