Home / 1,338.10-2,005.95-1,192.30

Finding the Fourth Proportional to 1,338.10, 2,005.95 and 1,192.30

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Solution

The fourth proportional to 1,338.10, 2,005.95 and 1,192.30 is: 1,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.10 : 2,005.95 = 1,192.30 : x
  2. Step 2: Convert to fraction form
    1,338.10/2,005.95 = 1,192.30/x
  3. Step 3: Cross multiply
    1,338.10x = 2,005.95 × 1,192.30
  4. Step 4: Simplify right side
    1,338.10x = 2,391,694.19
  5. Step 5: Solve for x
    x = 2,391,694.19/1,338.10
  6. Step 6: Final answer
    x = 1,787.38

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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.