Home / 1,186.14-1,636.98-655.15

Finding the Fourth Proportional to 1,186.14, 1,636.98 and 655.15

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Solution

The fourth proportional to 1,186.14, 1,636.98 and 655.15 is: 904.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.14 : 1,636.98 = 655.15 : x
  2. Step 2: Convert to fraction form
    1,186.14/1,636.98 = 655.15/x
  3. Step 3: Cross multiply
    1,186.14x = 1,636.98 × 655.15
  4. Step 4: Simplify right side
    1,186.14x = 1,072,471.80
  5. Step 5: Solve for x
    x = 1,072,471.80/1,186.14
  6. Step 6: Final answer
    x = 904.17

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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.