Home / 2,385.45-3,578.13-923.76

Finding the Fourth Proportional to 2,385.45, 3,578.13 and 923.76

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Solution

The fourth proportional to 2,385.45, 3,578.13 and 923.76 is: 1,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.45 : 3,578.13 = 923.76 : x
  2. Step 2: Convert to fraction form
    2,385.45/3,578.13 = 923.76/x
  3. Step 3: Cross multiply
    2,385.45x = 3,578.13 × 923.76
  4. Step 4: Simplify right side
    2,385.45x = 3,305,333.37
  5. Step 5: Solve for x
    x = 3,305,333.37/2,385.45
  6. Step 6: Final answer
    x = 1,385.62

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1.5x scale

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.