Home / 4,756.20-7,128.23-3,456.15

Finding the Fourth Proportional to 4,756.20, 7,128.23 and 3,456.15

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Solution

The fourth proportional to 4,756.20, 7,128.23 and 3,456.15 is: 5,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,756.20 : 7,128.23 = 3,456.15 : x
  2. Step 2: Convert to fraction form
    4,756.20/7,128.23 = 3,456.15/x
  3. Step 3: Cross multiply
    4,756.20x = 7,128.23 × 3,456.15
  4. Step 4: Simplify right side
    4,756.20x = 24,636,214.83
  5. Step 5: Solve for x
    x = 24,636,214.83/4,756.20
  6. Step 6: Final answer
    x = 5,179.81

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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.