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Finding the Fourth Proportional to 1,382.32, 1,907.44 and 793.05

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Solution

The fourth proportional to 1,382.32, 1,907.44 and 793.05 is: 1,094.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.32 : 1,907.44 = 793.05 : x
  2. Step 2: Convert to fraction form
    1,382.32/1,907.44 = 793.05/x
  3. Step 3: Cross multiply
    1,382.32x = 1,907.44 × 793.05
  4. Step 4: Simplify right side
    1,382.32x = 1,512,695.29
  5. Step 5: Solve for x
    x = 1,512,695.29/1,382.32
  6. Step 6: Final answer
    x = 1,094.32

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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.