Home / 3,187.55-4,782.01-1,239.77

Finding the Fourth Proportional to 3,187.55, 4,782.01 and 1,239.77

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Solution

The fourth proportional to 3,187.55, 4,782.01 and 1,239.77 is: 1,859.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.55 : 4,782.01 = 1,239.77 : x
  2. Step 2: Convert to fraction form
    3,187.55/4,782.01 = 1,239.77/x
  3. Step 3: Cross multiply
    3,187.55x = 4,782.01 × 1,239.77
  4. Step 4: Simplify right side
    3,187.55x = 5,928,568.63
  5. Step 5: Solve for x
    x = 5,928,568.63/3,187.55
  6. Step 6: Final answer
    x = 1,859.92

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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.