Home / 1,082.21-1,491.55-926.69

Finding the Fourth Proportional to 1,082.21, 1,491.55 and 926.69

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Solution

The fourth proportional to 1,082.21, 1,491.55 and 926.69 is: 1,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.21 : 1,491.55 = 926.69 : x
  2. Step 2: Convert to fraction form
    1,082.21/1,491.55 = 926.69/x
  3. Step 3: Cross multiply
    1,082.21x = 1,491.55 × 926.69
  4. Step 4: Simplify right side
    1,082.21x = 1,382,194.70
  5. Step 5: Solve for x
    x = 1,382,194.70/1,082.21
  6. Step 6: Final answer
    x = 1,277.20

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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.