Home / 1,424.18-2,135.51-730.57

Finding the Fourth Proportional to 1,424.18, 2,135.51 and 730.57

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Solution

The fourth proportional to 1,424.18, 2,135.51 and 730.57 is: 1,095.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.18 : 2,135.51 = 730.57 : x
  2. Step 2: Convert to fraction form
    1,424.18/2,135.51 = 730.57/x
  3. Step 3: Cross multiply
    1,424.18x = 2,135.51 × 730.57
  4. Step 4: Simplify right side
    1,424.18x = 1,560,125.21
  5. Step 5: Solve for x
    x = 1,560,125.21/1,424.18
  6. Step 6: Final answer
    x = 1,095.46

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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.