Home / 2,213.64-3,312.63-1,909.08

Finding the Fourth Proportional to 2,213.64, 3,312.63 and 1,909.08

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Solution

The fourth proportional to 2,213.64, 3,312.63 and 1,909.08 is: 2,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.64 : 3,312.63 = 1,909.08 : x
  2. Step 2: Convert to fraction form
    2,213.64/3,312.63 = 1,909.08/x
  3. Step 3: Cross multiply
    2,213.64x = 3,312.63 × 1,909.08
  4. Step 4: Simplify right side
    2,213.64x = 6,324,075.68
  5. Step 5: Solve for x
    x = 6,324,075.68/2,213.64
  6. Step 6: Final answer
    x = 2,856.87

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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.