Home / 1,623.20-2,240-1,002.08

Finding the Fourth Proportional to 1,623.20, 2,240 and 1,002.08

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Solution

The fourth proportional to 1,623.20, 2,240 and 1,002.08 is: 1,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.20 : 2,240 = 1,002.08 : x
  2. Step 2: Convert to fraction form
    1,623.20/2,240 = 1,002.08/x
  3. Step 3: Cross multiply
    1,623.20x = 2,240 × 1,002.08
  4. Step 4: Simplify right side
    1,623.20x = 2,244,659.20
  5. Step 5: Solve for x
    x = 2,244,659.20/1,623.20
  6. Step 6: Final answer
    x = 1,382.86

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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.