Home / 2,754.34-4,135.28-1,421.08

Finding the Fourth Proportional to 2,754.34, 4,135.28 and 1,421.08

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Solution

The fourth proportional to 2,754.34, 4,135.28 and 1,421.08 is: 2,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.34 : 4,135.28 = 1,421.08 : x
  2. Step 2: Convert to fraction form
    2,754.34/4,135.28 = 1,421.08/x
  3. Step 3: Cross multiply
    2,754.34x = 4,135.28 × 1,421.08
  4. Step 4: Simplify right side
    2,754.34x = 5,876,563.70
  5. Step 5: Solve for x
    x = 5,876,563.70/2,754.34
  6. Step 6: Final answer
    x = 2,133.57

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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.