Home / 3,189.12-4,782.74-1,340.18

Finding the Fourth Proportional to 3,189.12, 4,782.74 and 1,340.18

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Solution

The fourth proportional to 3,189.12, 4,782.74 and 1,340.18 is: 2,009.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.12 : 4,782.74 = 1,340.18 : x
  2. Step 2: Convert to fraction form
    3,189.12/4,782.74 = 1,340.18/x
  3. Step 3: Cross multiply
    3,189.12x = 4,782.74 × 1,340.18
  4. Step 4: Simplify right side
    3,189.12x = 6,409,732.49
  5. Step 5: Solve for x
    x = 6,409,732.49/3,189.12
  6. Step 6: Final answer
    x = 2,009.87

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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.