Home / 1,682.40-2,521.62-756.87

Finding the Fourth Proportional to 1,682.40, 2,521.62 and 756.87

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Solution

The fourth proportional to 1,682.40, 2,521.62 and 756.87 is: 1,134.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.40 : 2,521.62 = 756.87 : x
  2. Step 2: Convert to fraction form
    1,682.40/2,521.62 = 756.87/x
  3. Step 3: Cross multiply
    1,682.40x = 2,521.62 × 756.87
  4. Step 4: Simplify right side
    1,682.40x = 1,908,538.53
  5. Step 5: Solve for x
    x = 1,908,538.53/1,682.40
  6. Step 6: Final answer
    x = 1,134.41

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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.