Home / 1,869.28-2,580.42-1,282.84

Finding the Fourth Proportional to 1,869.28, 2,580.42 and 1,282.84

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Solution

The fourth proportional to 1,869.28, 2,580.42 and 1,282.84 is: 1,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.28 : 2,580.42 = 1,282.84 : x
  2. Step 2: Convert to fraction form
    1,869.28/2,580.42 = 1,282.84/x
  3. Step 3: Cross multiply
    1,869.28x = 2,580.42 × 1,282.84
  4. Step 4: Simplify right side
    1,869.28x = 3,310,265.99
  5. Step 5: Solve for x
    x = 3,310,265.99/1,869.28
  6. Step 6: Final answer
    x = 1,770.88

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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.