Home / 7,818.60-11,727.90-2,628.12

Finding the Fourth Proportional to 7,818.60, 11,727.90 and 2,628.12

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Solution

The fourth proportional to 7,818.60, 11,727.90 and 2,628.12 is: 3,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.60 : 11,727.90 = 2,628.12 : x
  2. Step 2: Convert to fraction form
    7,818.60/11,727.90 = 2,628.12/x
  3. Step 3: Cross multiply
    7,818.60x = 11,727.90 × 2,628.12
  4. Step 4: Simplify right side
    7,818.60x = 30,822,315.41
  5. Step 5: Solve for x
    x = 30,822,315.41/7,818.60
  6. Step 6: Final answer
    x = 3,942.18

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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.