Home / 2,216.12-3,325.68-917.58

Finding the Fourth Proportional to 2,216.12, 3,325.68 and 917.58

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Solution

The fourth proportional to 2,216.12, 3,325.68 and 917.58 is: 1,376.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.12 : 3,325.68 = 917.58 : x
  2. Step 2: Convert to fraction form
    2,216.12/3,325.68 = 917.58/x
  3. Step 3: Cross multiply
    2,216.12x = 3,325.68 × 917.58
  4. Step 4: Simplify right side
    2,216.12x = 3,051,577.45
  5. Step 5: Solve for x
    x = 3,051,577.45/2,216.12
  6. Step 6: Final answer
    x = 1,376.99

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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.