Home / 1,983.45-2,981.93-1,620.87

Finding the Fourth Proportional to 1,983.45, 2,981.93 and 1,620.87

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Solution

The fourth proportional to 1,983.45, 2,981.93 and 1,620.87 is: 2,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.45 : 2,981.93 = 1,620.87 : x
  2. Step 2: Convert to fraction form
    1,983.45/2,981.93 = 1,620.87/x
  3. Step 3: Cross multiply
    1,983.45x = 2,981.93 × 1,620.87
  4. Step 4: Simplify right side
    1,983.45x = 4,833,312.77
  5. Step 5: Solve for x
    x = 4,833,312.77/1,983.45
  6. Step 6: Final answer
    x = 2,436.82

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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.