Home / 1,401.14-2,100.48-669.71

Finding the Fourth Proportional to 1,401.14, 2,100.48 and 669.71

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Solution

The fourth proportional to 1,401.14, 2,100.48 and 669.71 is: 1,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.14 : 2,100.48 = 669.71 : x
  2. Step 2: Convert to fraction form
    1,401.14/2,100.48 = 669.71/x
  3. Step 3: Cross multiply
    1,401.14x = 2,100.48 × 669.71
  4. Step 4: Simplify right side
    1,401.14x = 1,406,701.96
  5. Step 5: Solve for x
    x = 1,406,701.96/1,401.14
  6. Step 6: Final answer
    x = 1,003.97

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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.