Home / 4,687.40-6,468.78-2,799.80

Finding the Fourth Proportional to 4,687.40, 6,468.78 and 2,799.80

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Solution

The fourth proportional to 4,687.40, 6,468.78 and 2,799.80 is: 3,863.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.40 : 6,468.78 = 2,799.80 : x
  2. Step 2: Convert to fraction form
    4,687.40/6,468.78 = 2,799.80/x
  3. Step 3: Cross multiply
    4,687.40x = 6,468.78 × 2,799.80
  4. Step 4: Simplify right side
    4,687.40x = 18,111,290.24
  5. Step 5: Solve for x
    x = 18,111,290.24/4,687.40
  6. Step 6: Final answer
    x = 3,863.82

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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.