Home / 1,512.03-2,086.66-839.90

Finding the Fourth Proportional to 1,512.03, 2,086.66 and 839.90

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Solution

The fourth proportional to 1,512.03, 2,086.66 and 839.90 is: 1,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.03 : 2,086.66 = 839.90 : x
  2. Step 2: Convert to fraction form
    1,512.03/2,086.66 = 839.90/x
  3. Step 3: Cross multiply
    1,512.03x = 2,086.66 × 839.90
  4. Step 4: Simplify right side
    1,512.03x = 1,752,576.35
  5. Step 5: Solve for x
    x = 1,752,576.35/1,512.03
  6. Step 6: Final answer
    x = 1,159.09

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1.5x scale

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.