Home / 1,143.21-1,576.19-933.17

Finding the Fourth Proportional to 1,143.21, 1,576.19 and 933.17

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Solution

The fourth proportional to 1,143.21, 1,576.19 and 933.17 is: 1,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.21 : 1,576.19 = 933.17 : x
  2. Step 2: Convert to fraction form
    1,143.21/1,576.19 = 933.17/x
  3. Step 3: Cross multiply
    1,143.21x = 1,576.19 × 933.17
  4. Step 4: Simplify right side
    1,143.21x = 1,470,853.22
  5. Step 5: Solve for x
    x = 1,470,853.22/1,143.21
  6. Step 6: Final answer
    x = 1,286.60

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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.