Home / 4,449.28-6,139.84-2,878.28

Finding the Fourth Proportional to 4,449.28, 6,139.84 and 2,878.28

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Solution

The fourth proportional to 4,449.28, 6,139.84 and 2,878.28 is: 3,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,449.28 : 6,139.84 = 2,878.28 : x
  2. Step 2: Convert to fraction form
    4,449.28/6,139.84 = 2,878.28/x
  3. Step 3: Cross multiply
    4,449.28x = 6,139.84 × 2,878.28
  4. Step 4: Simplify right side
    4,449.28x = 17,672,178.68
  5. Step 5: Solve for x
    x = 17,672,178.68/4,449.28
  6. Step 6: Final answer
    x = 3,971.92

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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.