Home / 3,187.98-4,781.04-1,239.72

Finding the Fourth Proportional to 3,187.98, 4,781.04 and 1,239.72

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Solution

The fourth proportional to 3,187.98, 4,781.04 and 1,239.72 is: 1,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.98 : 4,781.04 = 1,239.72 : x
  2. Step 2: Convert to fraction form
    3,187.98/4,781.04 = 1,239.72/x
  3. Step 3: Cross multiply
    3,187.98x = 4,781.04 × 1,239.72
  4. Step 4: Simplify right side
    3,187.98x = 5,927,150.91
  5. Step 5: Solve for x
    x = 5,927,150.91/3,187.98
  6. Step 6: Final answer
    x = 1,859.22

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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.