Home / 2,647.29-3,970.94-1,087.03

Finding the Fourth Proportional to 2,647.29, 3,970.94 and 1,087.03

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Solution

The fourth proportional to 2,647.29, 3,970.94 and 1,087.03 is: 1,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.29 : 3,970.94 = 1,087.03 : x
  2. Step 2: Convert to fraction form
    2,647.29/3,970.94 = 1,087.03/x
  3. Step 3: Cross multiply
    2,647.29x = 3,970.94 × 1,087.03
  4. Step 4: Simplify right side
    2,647.29x = 4,316,530.91
  5. Step 5: Solve for x
    x = 4,316,530.91/2,647.29
  6. Step 6: Final answer
    x = 1,630.55

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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.