Home / 2,720.30-4,085.40-1,626.80

Finding the Fourth Proportional to 2,720.30, 4,085.40 and 1,626.80

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Solution

The fourth proportional to 2,720.30, 4,085.40 and 1,626.80 is: 2,443.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.30 : 4,085.40 = 1,626.80 : x
  2. Step 2: Convert to fraction form
    2,720.30/4,085.40 = 1,626.80/x
  3. Step 3: Cross multiply
    2,720.30x = 4,085.40 × 1,626.80
  4. Step 4: Simplify right side
    2,720.30x = 6,646,128.72
  5. Step 5: Solve for x
    x = 6,646,128.72/2,720.30
  6. Step 6: Final answer
    x = 2,443.16

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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.