Home / 2,379.47-3,283.79-1,317.23

Finding the Fourth Proportional to 2,379.47, 3,283.79 and 1,317.23

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Solution

The fourth proportional to 2,379.47, 3,283.79 and 1,317.23 is: 1,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.47 : 3,283.79 = 1,317.23 : x
  2. Step 2: Convert to fraction form
    2,379.47/3,283.79 = 1,317.23/x
  3. Step 3: Cross multiply
    2,379.47x = 3,283.79 × 1,317.23
  4. Step 4: Simplify right side
    2,379.47x = 4,325,483.70
  5. Step 5: Solve for x
    x = 4,325,483.70/2,379.47
  6. Step 6: Final answer
    x = 1,817.84

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1.5x scale

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.