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Finding the Fourth Proportional to 2,385.54, 3,578.31 and 1,395.93

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Solution

The fourth proportional to 2,385.54, 3,578.31 and 1,395.93 is: 2,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.54 : 3,578.31 = 1,395.93 : x
  2. Step 2: Convert to fraction form
    2,385.54/3,578.31 = 1,395.93/x
  3. Step 3: Cross multiply
    2,385.54x = 3,578.31 × 1,395.93
  4. Step 4: Simplify right side
    2,385.54x = 4,995,070.28
  5. Step 5: Solve for x
    x = 4,995,070.28/2,385.54
  6. Step 6: Final answer
    x = 2,093.90

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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.