Home / 3,118.12-4,302.54-2,000.08

Finding the Fourth Proportional to 3,118.12, 4,302.54 and 2,000.08

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Solution

The fourth proportional to 3,118.12, 4,302.54 and 2,000.08 is: 2,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.12 : 4,302.54 = 2,000.08 : x
  2. Step 2: Convert to fraction form
    3,118.12/4,302.54 = 2,000.08/x
  3. Step 3: Cross multiply
    3,118.12x = 4,302.54 × 2,000.08
  4. Step 4: Simplify right side
    3,118.12x = 8,605,424.20
  5. Step 5: Solve for x
    x = 8,605,424.20/3,118.12
  6. Step 6: Final answer
    x = 2,759.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.