Home / 1,563.17-2,157.23-855.00

Finding the Fourth Proportional to 1,563.17, 2,157.23 and 855.00

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Solution

The fourth proportional to 1,563.17, 2,157.23 and 855.00 is: 1,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.17 : 2,157.23 = 855.00 : x
  2. Step 2: Convert to fraction form
    1,563.17/2,157.23 = 855.00/x
  3. Step 3: Cross multiply
    1,563.17x = 2,157.23 × 855.00
  4. Step 4: Simplify right side
    1,563.17x = 1,844,441.88
  5. Step 5: Solve for x
    x = 1,844,441.88/1,563.17
  6. Step 6: Final answer
    x = 1,179.93

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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.