Home / 2,166.28-2,988.41-1,419.91

Finding the Fourth Proportional to 2,166.28, 2,988.41 and 1,419.91

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Solution

The fourth proportional to 2,166.28, 2,988.41 and 1,419.91 is: 1,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.28 : 2,988.41 = 1,419.91 : x
  2. Step 2: Convert to fraction form
    2,166.28/2,988.41 = 1,419.91/x
  3. Step 3: Cross multiply
    2,166.28x = 2,988.41 × 1,419.91
  4. Step 4: Simplify right side
    2,166.28x = 4,243,258.67
  5. Step 5: Solve for x
    x = 4,243,258.67/2,166.28
  6. Step 6: Final answer
    x = 1,958.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.