Home / 4,815.76-6,645.74-2,720.28

Finding the Fourth Proportional to 4,815.76, 6,645.74 and 2,720.28

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Solution

The fourth proportional to 4,815.76, 6,645.74 and 2,720.28 is: 3,753.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.76 : 6,645.74 = 2,720.28 : x
  2. Step 2: Convert to fraction form
    4,815.76/6,645.74 = 2,720.28/x
  3. Step 3: Cross multiply
    4,815.76x = 6,645.74 × 2,720.28
  4. Step 4: Simplify right side
    4,815.76x = 18,078,273.61
  5. Step 5: Solve for x
    x = 18,078,273.61/4,815.76
  6. Step 6: Final answer
    x = 3,753.98

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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.