Home / 5,112.10-7,655.19-2,800.90

Finding the Fourth Proportional to 5,112.10, 7,655.19 and 2,800.90

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Solution

The fourth proportional to 5,112.10, 7,655.19 and 2,800.90 is: 4,194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.10 : 7,655.19 = 2,800.90 : x
  2. Step 2: Convert to fraction form
    5,112.10/7,655.19 = 2,800.90/x
  3. Step 3: Cross multiply
    5,112.10x = 7,655.19 × 2,800.90
  4. Step 4: Simplify right side
    5,112.10x = 21,441,421.67
  5. Step 5: Solve for x
    x = 21,441,421.67/5,112.10
  6. Step 6: Final answer
    x = 4,194.25

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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.