Home / 2,086.70-3,130.05-1,266.58

Finding the Fourth Proportional to 2,086.70, 3,130.05 and 1,266.58

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Solution

The fourth proportional to 2,086.70, 3,130.05 and 1,266.58 is: 1,899.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.70 : 3,130.05 = 1,266.58 : x
  2. Step 2: Convert to fraction form
    2,086.70/3,130.05 = 1,266.58/x
  3. Step 3: Cross multiply
    2,086.70x = 3,130.05 × 1,266.58
  4. Step 4: Simplify right side
    2,086.70x = 3,964,443.08
  5. Step 5: Solve for x
    x = 3,964,443.08/2,086.70
  6. Step 6: Final answer
    x = 1,899.86

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Similar ratio
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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.