Home / 3,715.81-5,123.96-3,186.47

Finding the Fourth Proportional to 3,715.81, 5,123.96 and 3,186.47

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Solution

The fourth proportional to 3,715.81, 5,123.96 and 3,186.47 is: 4,394.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.81 : 5,123.96 = 3,186.47 : x
  2. Step 2: Convert to fraction form
    3,715.81/5,123.96 = 3,186.47/x
  3. Step 3: Cross multiply
    3,715.81x = 5,123.96 × 3,186.47
  4. Step 4: Simplify right side
    3,715.81x = 16,327,353.65
  5. Step 5: Solve for x
    x = 16,327,353.65/3,715.81
  6. Step 6: Final answer
    x = 4,394.03

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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.