Home / 7,816.39-11,725.79-2,621.05

Finding the Fourth Proportional to 7,816.39, 11,725.79 and 2,621.05

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Solution

The fourth proportional to 7,816.39, 11,725.79 and 2,621.05 is: 3,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.39 : 11,725.79 = 2,621.05 : x
  2. Step 2: Convert to fraction form
    7,816.39/11,725.79 = 2,621.05/x
  3. Step 3: Cross multiply
    7,816.39x = 11,725.79 × 2,621.05
  4. Step 4: Simplify right side
    7,816.39x = 30,733,839.46
  5. Step 5: Solve for x
    x = 30,733,839.46/7,816.39
  6. Step 6: Final answer
    x = 3,931.97

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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.