Home / 2,813.60-4,220.40-2,351.90

Finding the Fourth Proportional to 2,813.60, 4,220.40 and 2,351.90

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Solution

The fourth proportional to 2,813.60, 4,220.40 and 2,351.90 is: 3,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.60 : 4,220.40 = 2,351.90 : x
  2. Step 2: Convert to fraction form
    2,813.60/4,220.40 = 2,351.90/x
  3. Step 3: Cross multiply
    2,813.60x = 4,220.40 × 2,351.90
  4. Step 4: Simplify right side
    2,813.60x = 9,925,958.76
  5. Step 5: Solve for x
    x = 9,925,958.76/2,813.60
  6. Step 6: Final answer
    x = 3,527.85

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1.5x scale

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.