Home / 2,989.26-4,485.51-1,257.84

Finding the Fourth Proportional to 2,989.26, 4,485.51 and 1,257.84

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Solution

The fourth proportional to 2,989.26, 4,485.51 and 1,257.84 is: 1,887.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.26 : 4,485.51 = 1,257.84 : x
  2. Step 2: Convert to fraction form
    2,989.26/4,485.51 = 1,257.84/x
  3. Step 3: Cross multiply
    2,989.26x = 4,485.51 × 1,257.84
  4. Step 4: Simplify right side
    2,989.26x = 5,642,053.90
  5. Step 5: Solve for x
    x = 5,642,053.90/2,989.26
  6. Step 6: Final answer
    x = 1,887.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.