Home / 2,428.96-3,641.28-1,129.36

Finding the Fourth Proportional to 2,428.96, 3,641.28 and 1,129.36

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Solution

The fourth proportional to 2,428.96, 3,641.28 and 1,129.36 is: 1,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.96 : 3,641.28 = 1,129.36 : x
  2. Step 2: Convert to fraction form
    2,428.96/3,641.28 = 1,129.36/x
  3. Step 3: Cross multiply
    2,428.96x = 3,641.28 × 1,129.36
  4. Step 4: Simplify right side
    2,428.96x = 4,112,315.98
  5. Step 5: Solve for x
    x = 4,112,315.98/2,428.96
  6. Step 6: Final answer
    x = 1,693.04

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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.