Home / 2,329.88-3,215.23-1,398.38

Finding the Fourth Proportional to 2,329.88, 3,215.23 and 1,398.38

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Solution

The fourth proportional to 2,329.88, 3,215.23 and 1,398.38 is: 1,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.88 : 3,215.23 = 1,398.38 : x
  2. Step 2: Convert to fraction form
    2,329.88/3,215.23 = 1,398.38/x
  3. Step 3: Cross multiply
    2,329.88x = 3,215.23 × 1,398.38
  4. Step 4: Simplify right side
    2,329.88x = 4,496,093.76
  5. Step 5: Solve for x
    x = 4,496,093.76/2,329.88
  6. Step 6: Final answer
    x = 1,929.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.