Home / 1,628.92-2,438.70-1,240.48

Finding the Fourth Proportional to 1,628.92, 2,438.70 and 1,240.48

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Solution

The fourth proportional to 1,628.92, 2,438.70 and 1,240.48 is: 1,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.92 : 2,438.70 = 1,240.48 : x
  2. Step 2: Convert to fraction form
    1,628.92/2,438.70 = 1,240.48/x
  3. Step 3: Cross multiply
    1,628.92x = 2,438.70 × 1,240.48
  4. Step 4: Simplify right side
    1,628.92x = 3,025,158.58
  5. Step 5: Solve for x
    x = 3,025,158.58/1,628.92
  6. Step 6: Final answer
    x = 1,857.16

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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.