Home / 4,176.72-6,256.58-1,978.79

Finding the Fourth Proportional to 4,176.72, 6,256.58 and 1,978.79

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Solution

The fourth proportional to 4,176.72, 6,256.58 and 1,978.79 is: 2,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,176.72 : 6,256.58 = 1,978.79 : x
  2. Step 2: Convert to fraction form
    4,176.72/6,256.58 = 1,978.79/x
  3. Step 3: Cross multiply
    4,176.72x = 6,256.58 × 1,978.79
  4. Step 4: Simplify right side
    4,176.72x = 12,380,457.94
  5. Step 5: Solve for x
    x = 12,380,457.94/4,176.72
  6. Step 6: Final answer
    x = 2,964.16

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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.