Home / 1,271.94-1,754.38-1,082.40

Finding the Fourth Proportional to 1,271.94, 1,754.38 and 1,082.40

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Solution

The fourth proportional to 1,271.94, 1,754.38 and 1,082.40 is: 1,492.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.94 : 1,754.38 = 1,082.40 : x
  2. Step 2: Convert to fraction form
    1,271.94/1,754.38 = 1,082.40/x
  3. Step 3: Cross multiply
    1,271.94x = 1,754.38 × 1,082.40
  4. Step 4: Simplify right side
    1,271.94x = 1,898,929.60
  5. Step 5: Solve for x
    x = 1,898,929.60/1,271.94
  6. Step 6: Final answer
    x = 1,492.94

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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.