Home / 3,318.87-4,971-2,218.08

Finding the Fourth Proportional to 3,318.87, 4,971 and 2,218.08

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Solution

The fourth proportional to 3,318.87, 4,971 and 2,218.08 is: 3,322.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.87 : 4,971 = 2,218.08 : x
  2. Step 2: Convert to fraction form
    3,318.87/4,971 = 2,218.08/x
  3. Step 3: Cross multiply
    3,318.87x = 4,971 × 2,218.08
  4. Step 4: Simplify right side
    3,318.87x = 11,026,075.68
  5. Step 5: Solve for x
    x = 11,026,075.68/3,318.87
  6. Step 6: Final answer
    x = 3,322.24

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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.