Home / 2,720.38-4,081.22-846.21

Finding the Fourth Proportional to 2,720.38, 4,081.22 and 846.21

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Solution

The fourth proportional to 2,720.38, 4,081.22 and 846.21 is: 1,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.38 : 4,081.22 = 846.21 : x
  2. Step 2: Convert to fraction form
    2,720.38/4,081.22 = 846.21/x
  3. Step 3: Cross multiply
    2,720.38x = 4,081.22 × 846.21
  4. Step 4: Simplify right side
    2,720.38x = 3,453,569.18
  5. Step 5: Solve for x
    x = 3,453,569.18/2,720.38
  6. Step 6: Final answer
    x = 1,269.52

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1.5x scale

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.