Home / 1,421.96-2,136.78-1,341.77

Finding the Fourth Proportional to 1,421.96, 2,136.78 and 1,341.77

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Solution

The fourth proportional to 1,421.96, 2,136.78 and 1,341.77 is: 2,016.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.96 : 2,136.78 = 1,341.77 : x
  2. Step 2: Convert to fraction form
    1,421.96/2,136.78 = 1,341.77/x
  3. Step 3: Cross multiply
    1,421.96x = 2,136.78 × 1,341.77
  4. Step 4: Simplify right side
    1,421.96x = 2,867,056.62
  5. Step 5: Solve for x
    x = 2,867,056.62/1,421.96
  6. Step 6: Final answer
    x = 2,016.28

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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.