Home / 1,880.28-2,817.42-1,261.62

Finding the Fourth Proportional to 1,880.28, 2,817.42 and 1,261.62

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Solution

The fourth proportional to 1,880.28, 2,817.42 and 1,261.62 is: 1,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.28 : 2,817.42 = 1,261.62 : x
  2. Step 2: Convert to fraction form
    1,880.28/2,817.42 = 1,261.62/x
  3. Step 3: Cross multiply
    1,880.28x = 2,817.42 × 1,261.62
  4. Step 4: Simplify right side
    1,880.28x = 3,554,513.42
  5. Step 5: Solve for x
    x = 3,554,513.42/1,880.28
  6. Step 6: Final answer
    x = 1,890.42

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1.5x scale

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.