Home / 2,889.30-3,987.27-1,563.03

Finding the Fourth Proportional to 2,889.30, 3,987.27 and 1,563.03

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Solution

The fourth proportional to 2,889.30, 3,987.27 and 1,563.03 is: 2,157.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.30 : 3,987.27 = 1,563.03 : x
  2. Step 2: Convert to fraction form
    2,889.30/3,987.27 = 1,563.03/x
  3. Step 3: Cross multiply
    2,889.30x = 3,987.27 × 1,563.03
  4. Step 4: Simplify right side
    2,889.30x = 6,232,222.63
  5. Step 5: Solve for x
    x = 6,232,222.63/2,889.30
  6. Step 6: Final answer
    x = 2,157.00

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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.