Home / 2,811.60-4,209.03-2,084.40

Finding the Fourth Proportional to 2,811.60, 4,209.03 and 2,084.40

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Solution

The fourth proportional to 2,811.60, 4,209.03 and 2,084.40 is: 3,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.60 : 4,209.03 = 2,084.40 : x
  2. Step 2: Convert to fraction form
    2,811.60/4,209.03 = 2,084.40/x
  3. Step 3: Cross multiply
    2,811.60x = 4,209.03 × 2,084.40
  4. Step 4: Simplify right side
    2,811.60x = 8,773,302.13
  5. Step 5: Solve for x
    x = 8,773,302.13/2,811.60
  6. Step 6: Final answer
    x = 3,120.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.