Home / 1,563.62-2,157.17-1,439.28

Finding the Fourth Proportional to 1,563.62, 2,157.17 and 1,439.28

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Solution

The fourth proportional to 1,563.62, 2,157.17 and 1,439.28 is: 1,985.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.62 : 2,157.17 = 1,439.28 : x
  2. Step 2: Convert to fraction form
    1,563.62/2,157.17 = 1,439.28/x
  3. Step 3: Cross multiply
    1,563.62x = 2,157.17 × 1,439.28
  4. Step 4: Simplify right side
    1,563.62x = 3,104,764.44
  5. Step 5: Solve for x
    x = 3,104,764.44/1,563.62
  6. Step 6: Final answer
    x = 1,985.63

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1.5x scale

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.