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Finding the Fourth Proportional to 1,186.16, 1,636.32 and 793.28

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Solution

The fourth proportional to 1,186.16, 1,636.32 and 793.28 is: 1,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.16 : 1,636.32 = 793.28 : x
  2. Step 2: Convert to fraction form
    1,186.16/1,636.32 = 793.28/x
  3. Step 3: Cross multiply
    1,186.16x = 1,636.32 × 793.28
  4. Step 4: Simplify right side
    1,186.16x = 1,298,059.93
  5. Step 5: Solve for x
    x = 1,298,059.93/1,186.16
  6. Step 6: Final answer
    x = 1,094.34

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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.