Home / 2,720.07-3,753.69-1,478.07

Finding the Fourth Proportional to 2,720.07, 3,753.69 and 1,478.07

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Solution

The fourth proportional to 2,720.07, 3,753.69 and 1,478.07 is: 2,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.07 : 3,753.69 = 1,478.07 : x
  2. Step 2: Convert to fraction form
    2,720.07/3,753.69 = 1,478.07/x
  3. Step 3: Cross multiply
    2,720.07x = 3,753.69 × 1,478.07
  4. Step 4: Simplify right side
    2,720.07x = 5,548,216.58
  5. Step 5: Solve for x
    x = 5,548,216.58/2,720.07
  6. Step 6: Final answer
    x = 2,039.73

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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.