Home / 4,451.12-6,139.52-2,878.80

Finding the Fourth Proportional to 4,451.12, 6,139.52 and 2,878.80

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Solution

The fourth proportional to 4,451.12, 6,139.52 and 2,878.80 is: 3,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,451.12 : 6,139.52 = 2,878.80 : x
  2. Step 2: Convert to fraction form
    4,451.12/6,139.52 = 2,878.80/x
  3. Step 3: Cross multiply
    4,451.12x = 6,139.52 × 2,878.80
  4. Step 4: Simplify right side
    4,451.12x = 17,674,450.18
  5. Step 5: Solve for x
    x = 17,674,450.18/4,451.12
  6. Step 6: Final answer
    x = 3,970.79

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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.