Home / 3,216.40-4,815.15-2,398.30

Finding the Fourth Proportional to 3,216.40, 4,815.15 and 2,398.30

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Solution

The fourth proportional to 3,216.40, 4,815.15 and 2,398.30 is: 3,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.40 : 4,815.15 = 2,398.30 : x
  2. Step 2: Convert to fraction form
    3,216.40/4,815.15 = 2,398.30/x
  3. Step 3: Cross multiply
    3,216.40x = 4,815.15 × 2,398.30
  4. Step 4: Simplify right side
    3,216.40x = 11,548,174.25
  5. Step 5: Solve for x
    x = 11,548,174.25/3,216.40
  6. Step 6: Final answer
    x = 3,590.40

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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.