Home / 3,317.76-4,578.39-2,139.48

Finding the Fourth Proportional to 3,317.76, 4,578.39 and 2,139.48

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Solution

The fourth proportional to 3,317.76, 4,578.39 and 2,139.48 is: 2,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.76 : 4,578.39 = 2,139.48 : x
  2. Step 2: Convert to fraction form
    3,317.76/4,578.39 = 2,139.48/x
  3. Step 3: Cross multiply
    3,317.76x = 4,578.39 × 2,139.48
  4. Step 4: Simplify right side
    3,317.76x = 9,795,373.84
  5. Step 5: Solve for x
    x = 9,795,373.84/3,317.76
  6. Step 6: Final answer
    x = 2,952.41

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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.