Home / 1,628.16-2,440.32-1,042.40

Finding the Fourth Proportional to 1,628.16, 2,440.32 and 1,042.40

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Solution

The fourth proportional to 1,628.16, 2,440.32 and 1,042.40 is: 1,562.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.16 : 2,440.32 = 1,042.40 : x
  2. Step 2: Convert to fraction form
    1,628.16/2,440.32 = 1,042.40/x
  3. Step 3: Cross multiply
    1,628.16x = 2,440.32 × 1,042.40
  4. Step 4: Simplify right side
    1,628.16x = 2,543,789.57
  5. Step 5: Solve for x
    x = 2,543,789.57/1,628.16
  6. Step 6: Final answer
    x = 1,562.37

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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.