Home / 2,889.30-3,987.72-1,711.02

Finding the Fourth Proportional to 2,889.30, 3,987.72 and 1,711.02

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Solution

The fourth proportional to 2,889.30, 3,987.72 and 1,711.02 is: 2,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.30 : 3,987.72 = 1,711.02 : x
  2. Step 2: Convert to fraction form
    2,889.30/3,987.72 = 1,711.02/x
  3. Step 3: Cross multiply
    2,889.30x = 3,987.72 × 1,711.02
  4. Step 4: Simplify right side
    2,889.30x = 6,823,068.67
  5. Step 5: Solve for x
    x = 6,823,068.67/2,889.30
  6. Step 6: Final answer
    x = 2,361.50

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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.