Home / 1,989.46-2,983.26-1,064.80

Finding the Fourth Proportional to 1,989.46, 2,983.26 and 1,064.80

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Solution

The fourth proportional to 1,989.46, 2,983.26 and 1,064.80 is: 1,596.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.46 : 2,983.26 = 1,064.80 : x
  2. Step 2: Convert to fraction form
    1,989.46/2,983.26 = 1,064.80/x
  3. Step 3: Cross multiply
    1,989.46x = 2,983.26 × 1,064.80
  4. Step 4: Simplify right side
    1,989.46x = 3,176,575.25
  5. Step 5: Solve for x
    x = 3,176,575.25/1,989.46
  6. Step 6: Final answer
    x = 1,596.70

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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.