Home / 3,176.54-4,762.88-1,421.21

Finding the Fourth Proportional to 3,176.54, 4,762.88 and 1,421.21

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Solution

The fourth proportional to 3,176.54, 4,762.88 and 1,421.21 is: 2,130.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.54 : 4,762.88 = 1,421.21 : x
  2. Step 2: Convert to fraction form
    3,176.54/4,762.88 = 1,421.21/x
  3. Step 3: Cross multiply
    3,176.54x = 4,762.88 × 1,421.21
  4. Step 4: Simplify right side
    3,176.54x = 6,769,063.28
  5. Step 5: Solve for x
    x = 6,769,063.28/3,176.54
  6. Step 6: Final answer
    x = 2,130.96

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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.