Home / 5,136.23-7,086.33-2,867.20

Finding the Fourth Proportional to 5,136.23, 7,086.33 and 2,867.20

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Solution

The fourth proportional to 5,136.23, 7,086.33 and 2,867.20 is: 3,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.23 : 7,086.33 = 2,867.20 : x
  2. Step 2: Convert to fraction form
    5,136.23/7,086.33 = 2,867.20/x
  3. Step 3: Cross multiply
    5,136.23x = 7,086.33 × 2,867.20
  4. Step 4: Simplify right side
    5,136.23x = 20,317,925.38
  5. Step 5: Solve for x
    x = 20,317,925.38/5,136.23
  6. Step 6: Final answer
    x = 3,955.81

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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.