Home / 4,917.40-7,359.90-3,815.80

Finding the Fourth Proportional to 4,917.40, 7,359.90 and 3,815.80

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Solution

The fourth proportional to 4,917.40, 7,359.90 and 3,815.80 is: 5,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.40 : 7,359.90 = 3,815.80 : x
  2. Step 2: Convert to fraction form
    4,917.40/7,359.90 = 3,815.80/x
  3. Step 3: Cross multiply
    4,917.40x = 7,359.90 × 3,815.80
  4. Step 4: Simplify right side
    4,917.40x = 28,083,906.42
  5. Step 5: Solve for x
    x = 28,083,906.42/4,917.40
  6. Step 6: Final answer
    x = 5,711.13

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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.