Home / 7,857.37-11,783.55-2,591.40

Finding the Fourth Proportional to 7,857.37, 11,783.55 and 2,591.40

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Solution

The fourth proportional to 7,857.37, 11,783.55 and 2,591.40 is: 3,886.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.37 : 11,783.55 = 2,591.40 : x
  2. Step 2: Convert to fraction form
    7,857.37/11,783.55 = 2,591.40/x
  3. Step 3: Cross multiply
    7,857.37x = 11,783.55 × 2,591.40
  4. Step 4: Simplify right side
    7,857.37x = 30,535,891.47
  5. Step 5: Solve for x
    x = 30,535,891.47/7,857.37
  6. Step 6: Final answer
    x = 3,886.27

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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.