Home / 1,909.32-2,635.38-1,563.72

Finding the Fourth Proportional to 1,909.32, 2,635.38 and 1,563.72

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Solution

The fourth proportional to 1,909.32, 2,635.38 and 1,563.72 is: 2,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.32 : 2,635.38 = 1,563.72 : x
  2. Step 2: Convert to fraction form
    1,909.32/2,635.38 = 1,563.72/x
  3. Step 3: Cross multiply
    1,909.32x = 2,635.38 × 1,563.72
  4. Step 4: Simplify right side
    1,909.32x = 4,120,996.41
  5. Step 5: Solve for x
    x = 4,120,996.41/1,909.32
  6. Step 6: Final answer
    x = 2,158.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.