Home / 7,412.18-11,118.27-2,971.88

Finding the Fourth Proportional to 7,412.18, 11,118.27 and 2,971.88

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Solution

The fourth proportional to 7,412.18, 11,118.27 and 2,971.88 is: 4,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.18 : 11,118.27 = 2,971.88 : x
  2. Step 2: Convert to fraction form
    7,412.18/11,118.27 = 2,971.88/x
  3. Step 3: Cross multiply
    7,412.18x = 11,118.27 × 2,971.88
  4. Step 4: Simplify right side
    7,412.18x = 33,042,164.25
  5. Step 5: Solve for x
    x = 33,042,164.25/7,412.18
  6. Step 6: Final answer
    x = 4,457.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.