Home / 3,955.29-5,457.85-2,186.88

Finding the Fourth Proportional to 3,955.29, 5,457.85 and 2,186.88

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Solution

The fourth proportional to 3,955.29, 5,457.85 and 2,186.88 is: 3,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.29 : 5,457.85 = 2,186.88 : x
  2. Step 2: Convert to fraction form
    3,955.29/5,457.85 = 2,186.88/x
  3. Step 3: Cross multiply
    3,955.29x = 5,457.85 × 2,186.88
  4. Step 4: Simplify right side
    3,955.29x = 11,935,663.01
  5. Step 5: Solve for x
    x = 11,935,663.01/3,955.29
  6. Step 6: Final answer
    x = 3,017.65

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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.