Home / 1,541.98-2,128.17-1,212.90

Finding the Fourth Proportional to 1,541.98, 2,128.17 and 1,212.90

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Solution

The fourth proportional to 1,541.98, 2,128.17 and 1,212.90 is: 1,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.98 : 2,128.17 = 1,212.90 : x
  2. Step 2: Convert to fraction form
    1,541.98/2,128.17 = 1,212.90/x
  3. Step 3: Cross multiply
    1,541.98x = 2,128.17 × 1,212.90
  4. Step 4: Simplify right side
    1,541.98x = 2,581,257.39
  5. Step 5: Solve for x
    x = 2,581,257.39/1,541.98
  6. Step 6: Final answer
    x = 1,673.99

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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.