Home / 2,181.71-3,010.75-1,186.98

Finding the Fourth Proportional to 2,181.71, 3,010.75 and 1,186.98

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Solution

The fourth proportional to 2,181.71, 3,010.75 and 1,186.98 is: 1,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.71 : 3,010.75 = 1,186.98 : x
  2. Step 2: Convert to fraction form
    2,181.71/3,010.75 = 1,186.98/x
  3. Step 3: Cross multiply
    2,181.71x = 3,010.75 × 1,186.98
  4. Step 4: Simplify right side
    2,181.71x = 3,573,711.12
  5. Step 5: Solve for x
    x = 3,573,711.12/2,181.71
  6. Step 6: Final answer
    x = 1,638.03

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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.