Home / 2,570.12-3,855.18-1,270.28

Finding the Fourth Proportional to 2,570.12, 3,855.18 and 1,270.28

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Solution

The fourth proportional to 2,570.12, 3,855.18 and 1,270.28 is: 1,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.12 : 3,855.18 = 1,270.28 : x
  2. Step 2: Convert to fraction form
    2,570.12/3,855.18 = 1,270.28/x
  3. Step 3: Cross multiply
    2,570.12x = 3,855.18 × 1,270.28
  4. Step 4: Simplify right side
    2,570.12x = 4,897,158.05
  5. Step 5: Solve for x
    x = 4,897,158.05/2,570.12
  6. Step 6: Final answer
    x = 1,905.42

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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.