Home / 1,619.10-2,426.76-785.70

Finding the Fourth Proportional to 1,619.10, 2,426.76 and 785.70

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Solution

The fourth proportional to 1,619.10, 2,426.76 and 785.70 is: 1,177.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.10 : 2,426.76 = 785.70 : x
  2. Step 2: Convert to fraction form
    1,619.10/2,426.76 = 785.70/x
  3. Step 3: Cross multiply
    1,619.10x = 2,426.76 × 785.70
  4. Step 4: Simplify right side
    1,619.10x = 1,906,705.33
  5. Step 5: Solve for x
    x = 1,906,705.33/1,619.10
  6. Step 6: Final answer
    x = 1,177.63

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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.