Home / 3,118.30-4,678.81-2,197.02

Finding the Fourth Proportional to 3,118.30, 4,678.81 and 2,197.02

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Solution

The fourth proportional to 3,118.30, 4,678.81 and 2,197.02 is: 3,296.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.30 : 4,678.81 = 2,197.02 : x
  2. Step 2: Convert to fraction form
    3,118.30/4,678.81 = 2,197.02/x
  3. Step 3: Cross multiply
    3,118.30x = 4,678.81 × 2,197.02
  4. Step 4: Simplify right side
    3,118.30x = 10,279,463.56
  5. Step 5: Solve for x
    x = 10,279,463.56/3,118.30
  6. Step 6: Final answer
    x = 3,296.50

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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.