Home / 2,623.16-3,619.96-1,428.15

Finding the Fourth Proportional to 2,623.16, 3,619.96 and 1,428.15

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Solution

The fourth proportional to 2,623.16, 3,619.96 and 1,428.15 is: 1,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.16 : 3,619.96 = 1,428.15 : x
  2. Step 2: Convert to fraction form
    2,623.16/3,619.96 = 1,428.15/x
  3. Step 3: Cross multiply
    2,623.16x = 3,619.96 × 1,428.15
  4. Step 4: Simplify right side
    2,623.16x = 5,169,861.23
  5. Step 5: Solve for x
    x = 5,169,861.23/2,623.16
  6. Step 6: Final answer
    x = 1,970.86

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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.