Home / 3,521.40-4,854.84-2,815.80

Finding the Fourth Proportional to 3,521.40, 4,854.84 and 2,815.80

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Solution

The fourth proportional to 3,521.40, 4,854.84 and 2,815.80 is: 3,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.40 : 4,854.84 = 2,815.80 : x
  2. Step 2: Convert to fraction form
    3,521.40/4,854.84 = 2,815.80/x
  3. Step 3: Cross multiply
    3,521.40x = 4,854.84 × 2,815.80
  4. Step 4: Simplify right side
    3,521.40x = 13,670,258.47
  5. Step 5: Solve for x
    x = 13,670,258.47/3,521.40
  6. Step 6: Final answer
    x = 3,882.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.