Home / 7,881.18-11,814.21-3,498.18

Finding the Fourth Proportional to 7,881.18, 11,814.21 and 3,498.18

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Solution

The fourth proportional to 7,881.18, 11,814.21 and 3,498.18 is: 5,243.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.18 : 11,814.21 = 3,498.18 : x
  2. Step 2: Convert to fraction form
    7,881.18/11,814.21 = 3,498.18/x
  3. Step 3: Cross multiply
    7,881.18x = 11,814.21 × 3,498.18
  4. Step 4: Simplify right side
    7,881.18x = 41,328,233.14
  5. Step 5: Solve for x
    x = 41,328,233.14/7,881.18
  6. Step 6: Final answer
    x = 5,243.91

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1.5x scale

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.