Home / 3,954.72-5,457.36-2,186.28

Finding the Fourth Proportional to 3,954.72, 5,457.36 and 2,186.28

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Solution

The fourth proportional to 3,954.72, 5,457.36 and 2,186.28 is: 3,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.72 : 5,457.36 = 2,186.28 : x
  2. Step 2: Convert to fraction form
    3,954.72/5,457.36 = 2,186.28/x
  3. Step 3: Cross multiply
    3,954.72x = 5,457.36 × 2,186.28
  4. Step 4: Simplify right side
    3,954.72x = 11,931,317.02
  5. Step 5: Solve for x
    x = 11,931,317.02/3,954.72
  6. Step 6: Final answer
    x = 3,016.98

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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.