Home / 4,051.34-6,078.78-1,420.74

Finding the Fourth Proportional to 4,051.34, 6,078.78 and 1,420.74

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Solution

The fourth proportional to 4,051.34, 6,078.78 and 1,420.74 is: 2,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,051.34 : 6,078.78 = 1,420.74 : x
  2. Step 2: Convert to fraction form
    4,051.34/6,078.78 = 1,420.74/x
  3. Step 3: Cross multiply
    4,051.34x = 6,078.78 × 1,420.74
  4. Step 4: Simplify right side
    4,051.34x = 8,636,365.90
  5. Step 5: Solve for x
    x = 8,636,365.90/4,051.34
  6. Step 6: Final answer
    x = 2,131.73

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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.