Home / 3,187.85-4,781.78-3,133.18

Finding the Fourth Proportional to 3,187.85, 4,781.78 and 3,133.18

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Solution

The fourth proportional to 3,187.85, 4,781.78 and 3,133.18 is: 4,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.85 : 4,781.78 = 3,133.18 : x
  2. Step 2: Convert to fraction form
    3,187.85/4,781.78 = 3,133.18/x
  3. Step 3: Cross multiply
    3,187.85x = 4,781.78 × 3,133.18
  4. Step 4: Simplify right side
    3,187.85x = 14,982,137.89
  5. Step 5: Solve for x
    x = 14,982,137.89/3,187.85
  6. Step 6: Final answer
    x = 4,699.76

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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.