Home / 4,815.75-6,645.75-2,720.28

Finding the Fourth Proportional to 4,815.75, 6,645.75 and 2,720.28

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Solution

The fourth proportional to 4,815.75, 6,645.75 and 2,720.28 is: 3,753.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.75 : 6,645.75 = 2,720.28 : x
  2. Step 2: Convert to fraction form
    4,815.75/6,645.75 = 2,720.28/x
  3. Step 3: Cross multiply
    4,815.75x = 6,645.75 × 2,720.28
  4. Step 4: Simplify right side
    4,815.75x = 18,078,300.81
  5. Step 5: Solve for x
    x = 18,078,300.81/4,815.75
  6. Step 6: Final answer
    x = 3,753.99

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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.