Home / 2,720.19-3,753.88-1,478.19

Finding the Fourth Proportional to 2,720.19, 3,753.88 and 1,478.19

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Solution

The fourth proportional to 2,720.19, 3,753.88 and 1,478.19 is: 2,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.19 : 3,753.88 = 1,478.19 : x
  2. Step 2: Convert to fraction form
    2,720.19/3,753.88 = 1,478.19/x
  3. Step 3: Cross multiply
    2,720.19x = 3,753.88 × 1,478.19
  4. Step 4: Simplify right side
    2,720.19x = 5,548,942.19
  5. Step 5: Solve for x
    x = 5,548,942.19/2,720.19
  6. Step 6: Final answer
    x = 2,039.91

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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.