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Finding the Fourth Proportional to 1,186.08, 1,636.80 and 793.12

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Solution

The fourth proportional to 1,186.08, 1,636.80 and 793.12 is: 1,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.08 : 1,636.80 = 793.12 : x
  2. Step 2: Convert to fraction form
    1,186.08/1,636.80 = 793.12/x
  3. Step 3: Cross multiply
    1,186.08x = 1,636.80 × 793.12
  4. Step 4: Simplify right side
    1,186.08x = 1,298,178.82
  5. Step 5: Solve for x
    x = 1,298,178.82/1,186.08
  6. Step 6: Final answer
    x = 1,094.51

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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.