Home / 2,650.11-3,975.81-1,871.63

Finding the Fourth Proportional to 2,650.11, 3,975.81 and 1,871.63

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Solution

The fourth proportional to 2,650.11, 3,975.81 and 1,871.63 is: 2,807.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.11 : 3,975.81 = 1,871.63 : x
  2. Step 2: Convert to fraction form
    2,650.11/3,975.81 = 1,871.63/x
  3. Step 3: Cross multiply
    2,650.11x = 3,975.81 × 1,871.63
  4. Step 4: Simplify right side
    2,650.11x = 7,441,225.39
  5. Step 5: Solve for x
    x = 7,441,225.39/2,650.11
  6. Step 6: Final answer
    x = 2,807.89

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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.