Home / 3,191-4,784.64-1,240.92

Finding the Fourth Proportional to 3,191, 4,784.64 and 1,240.92

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Solution

The fourth proportional to 3,191, 4,784.64 and 1,240.92 is: 1,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191 : 4,784.64 = 1,240.92 : x
  2. Step 2: Convert to fraction form
    3,191/4,784.64 = 1,240.92/x
  3. Step 3: Cross multiply
    3,191x = 4,784.64 × 1,240.92
  4. Step 4: Simplify right side
    3,191x = 5,937,355.47
  5. Step 5: Solve for x
    x = 5,937,355.47/3,191
  6. Step 6: Final answer
    x = 1,860.66

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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.