Home / 2,889.83-3,987.95-1,563.53

Finding the Fourth Proportional to 2,889.83, 3,987.95 and 1,563.53

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Solution

The fourth proportional to 2,889.83, 3,987.95 and 1,563.53 is: 2,157.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.83 : 3,987.95 = 1,563.53 : x
  2. Step 2: Convert to fraction form
    2,889.83/3,987.95 = 1,563.53/x
  3. Step 3: Cross multiply
    2,889.83x = 3,987.95 × 1,563.53
  4. Step 4: Simplify right side
    2,889.83x = 6,235,251.71
  5. Step 5: Solve for x
    x = 6,235,251.71/2,889.83
  6. Step 6: Final answer
    x = 2,157.66

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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.