Home / 3,955.34-5,458.70-2,187.30

Finding the Fourth Proportional to 3,955.34, 5,458.70 and 2,187.30

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Solution

The fourth proportional to 3,955.34, 5,458.70 and 2,187.30 is: 3,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.34 : 5,458.70 = 2,187.30 : x
  2. Step 2: Convert to fraction form
    3,955.34/5,458.70 = 2,187.30/x
  3. Step 3: Cross multiply
    3,955.34x = 5,458.70 × 2,187.30
  4. Step 4: Simplify right side
    3,955.34x = 11,939,814.51
  5. Step 5: Solve for x
    x = 11,939,814.51/3,955.34
  6. Step 6: Final answer
    x = 3,018.66

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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.