Home / 1,563.91-2,157.44-1,004.20

Finding the Fourth Proportional to 1,563.91, 2,157.44 and 1,004.20

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Solution

The fourth proportional to 1,563.91, 2,157.44 and 1,004.20 is: 1,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.91 : 2,157.44 = 1,004.20 : x
  2. Step 2: Convert to fraction form
    1,563.91/2,157.44 = 1,004.20/x
  3. Step 3: Cross multiply
    1,563.91x = 2,157.44 × 1,004.20
  4. Step 4: Simplify right side
    1,563.91x = 2,166,490.83
  5. Step 5: Solve for x
    x = 2,166,490.83/1,563.91
  6. Step 6: Final answer
    x = 1,385.31

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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.