Home / 4,172.83-6,260.45-1,978.54

Finding the Fourth Proportional to 4,172.83, 6,260.45 and 1,978.54

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Solution

The fourth proportional to 4,172.83, 6,260.45 and 1,978.54 is: 2,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.83 : 6,260.45 = 1,978.54 : x
  2. Step 2: Convert to fraction form
    4,172.83/6,260.45 = 1,978.54/x
  3. Step 3: Cross multiply
    4,172.83x = 6,260.45 × 1,978.54
  4. Step 4: Simplify right side
    4,172.83x = 12,386,550.74
  5. Step 5: Solve for x
    x = 12,386,550.74/4,172.83
  6. Step 6: Final answer
    x = 2,968.38

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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.