Home / 2,186.82-3,017.70-1,242.49

Finding the Fourth Proportional to 2,186.82, 3,017.70 and 1,242.49

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Solution

The fourth proportional to 2,186.82, 3,017.70 and 1,242.49 is: 1,714.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.82 : 3,017.70 = 1,242.49 : x
  2. Step 2: Convert to fraction form
    2,186.82/3,017.70 = 1,242.49/x
  3. Step 3: Cross multiply
    2,186.82x = 3,017.70 × 1,242.49
  4. Step 4: Simplify right side
    2,186.82x = 3,749,459.19
  5. Step 5: Solve for x
    x = 3,749,459.19/2,186.82
  6. Step 6: Final answer
    x = 1,714.57

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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.