Home / 1,428.76-2,126.25-1,376.92

Finding the Fourth Proportional to 1,428.76, 2,126.25 and 1,376.92

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Solution

The fourth proportional to 1,428.76, 2,126.25 and 1,376.92 is: 2,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.76 : 2,126.25 = 1,376.92 : x
  2. Step 2: Convert to fraction form
    1,428.76/2,126.25 = 1,376.92/x
  3. Step 3: Cross multiply
    1,428.76x = 2,126.25 × 1,376.92
  4. Step 4: Simplify right side
    1,428.76x = 2,927,676.15
  5. Step 5: Solve for x
    x = 2,927,676.15/1,428.76
  6. Step 6: Final answer
    x = 2,049.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.