Home / 1,325.27-1,986.51-447.11

Finding the Fourth Proportional to 1,325.27, 1,986.51 and 447.11

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Solution

The fourth proportional to 1,325.27, 1,986.51 and 447.11 is: 670.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.27 : 1,986.51 = 447.11 : x
  2. Step 2: Convert to fraction form
    1,325.27/1,986.51 = 447.11/x
  3. Step 3: Cross multiply
    1,325.27x = 1,986.51 × 447.11
  4. Step 4: Simplify right side
    1,325.27x = 888,178.55
  5. Step 5: Solve for x
    x = 888,178.55/1,325.27
  6. Step 6: Final answer
    x = 670.19

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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.