Home / 7,122.11-10,683.77-1,857.81

Finding the Fourth Proportional to 7,122.11, 10,683.77 and 1,857.81

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Solution

The fourth proportional to 7,122.11, 10,683.77 and 1,857.81 is: 2,786.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.11 : 10,683.77 = 1,857.81 : x
  2. Step 2: Convert to fraction form
    7,122.11/10,683.77 = 1,857.81/x
  3. Step 3: Cross multiply
    7,122.11x = 10,683.77 × 1,857.81
  4. Step 4: Simplify right side
    7,122.11x = 19,848,432.16
  5. Step 5: Solve for x
    x = 19,848,432.16/7,122.11
  6. Step 6: Final answer
    x = 2,786.88

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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.