Home / 2,214.64-3,316.49-1,390.42

Finding the Fourth Proportional to 2,214.64, 3,316.49 and 1,390.42

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Solution

The fourth proportional to 2,214.64, 3,316.49 and 1,390.42 is: 2,082.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.64 : 3,316.49 = 1,390.42 : x
  2. Step 2: Convert to fraction form
    2,214.64/3,316.49 = 1,390.42/x
  3. Step 3: Cross multiply
    2,214.64x = 3,316.49 × 1,390.42
  4. Step 4: Simplify right side
    2,214.64x = 4,611,290.49
  5. Step 5: Solve for x
    x = 4,611,290.49/2,214.64
  6. Step 6: Final answer
    x = 2,082.19

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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.