Home / 7,748.78-11,619.51-2,814.98

Finding the Fourth Proportional to 7,748.78, 11,619.51 and 2,814.98

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Solution

The fourth proportional to 7,748.78, 11,619.51 and 2,814.98 is: 4,221.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,748.78 : 11,619.51 = 2,814.98 : x
  2. Step 2: Convert to fraction form
    7,748.78/11,619.51 = 2,814.98/x
  3. Step 3: Cross multiply
    7,748.78x = 11,619.51 × 2,814.98
  4. Step 4: Simplify right side
    7,748.78x = 32,708,688.26
  5. Step 5: Solve for x
    x = 32,708,688.26/7,748.78
  6. Step 6: Final answer
    x = 4,221.14

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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.