Home / 1,551.45-2,325.15-820.83

Finding the Fourth Proportional to 1,551.45, 2,325.15 and 820.83

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Solution

The fourth proportional to 1,551.45, 2,325.15 and 820.83 is: 1,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.45 : 2,325.15 = 820.83 : x
  2. Step 2: Convert to fraction form
    1,551.45/2,325.15 = 820.83/x
  3. Step 3: Cross multiply
    1,551.45x = 2,325.15 × 820.83
  4. Step 4: Simplify right side
    1,551.45x = 1,908,552.87
  5. Step 5: Solve for x
    x = 1,908,552.87/1,551.45
  6. Step 6: Final answer
    x = 1,230.17

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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.