Home / 1,325.14-1,998.32-1,306.91

Finding the Fourth Proportional to 1,325.14, 1,998.32 and 1,306.91

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Solution

The fourth proportional to 1,325.14, 1,998.32 and 1,306.91 is: 1,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.14 : 1,998.32 = 1,306.91 : x
  2. Step 2: Convert to fraction form
    1,325.14/1,998.32 = 1,306.91/x
  3. Step 3: Cross multiply
    1,325.14x = 1,998.32 × 1,306.91
  4. Step 4: Simplify right side
    1,325.14x = 2,611,624.39
  5. Step 5: Solve for x
    x = 2,611,624.39/1,325.14
  6. Step 6: Final answer
    x = 1,970.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.