Home / 5,235.74-7,851.79-2,115.01

Finding the Fourth Proportional to 5,235.74, 7,851.79 and 2,115.01

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Solution

The fourth proportional to 5,235.74, 7,851.79 and 2,115.01 is: 3,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,235.74 : 7,851.79 = 2,115.01 : x
  2. Step 2: Convert to fraction form
    5,235.74/7,851.79 = 2,115.01/x
  3. Step 3: Cross multiply
    5,235.74x = 7,851.79 × 2,115.01
  4. Step 4: Simplify right side
    5,235.74x = 16,606,614.93
  5. Step 5: Solve for x
    x = 16,606,614.93/5,235.74
  6. Step 6: Final answer
    x = 3,171.78

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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.