Home / 3,071.70-4,238.82-1,812.80

Finding the Fourth Proportional to 3,071.70, 4,238.82 and 1,812.80

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Solution

The fourth proportional to 3,071.70, 4,238.82 and 1,812.80 is: 2,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.70 : 4,238.82 = 1,812.80 : x
  2. Step 2: Convert to fraction form
    3,071.70/4,238.82 = 1,812.80/x
  3. Step 3: Cross multiply
    3,071.70x = 4,238.82 × 1,812.80
  4. Step 4: Simplify right side
    3,071.70x = 7,684,132.90
  5. Step 5: Solve for x
    x = 7,684,132.90/3,071.70
  6. Step 6: Final answer
    x = 2,501.59

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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.