Home / 1,521.84-2,282.70-426.26

Finding the Fourth Proportional to 1,521.84, 2,282.70 and 426.26

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Solution

The fourth proportional to 1,521.84, 2,282.70 and 426.26 is: 639.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.84 : 2,282.70 = 426.26 : x
  2. Step 2: Convert to fraction form
    1,521.84/2,282.70 = 426.26/x
  3. Step 3: Cross multiply
    1,521.84x = 2,282.70 × 426.26
  4. Step 4: Simplify right side
    1,521.84x = 973,023.70
  5. Step 5: Solve for x
    x = 973,023.70/1,521.84
  6. Step 6: Final answer
    x = 639.37

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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.