Home / 2,181.63-3,010.60-1,186.91

Finding the Fourth Proportional to 2,181.63, 3,010.60 and 1,186.91

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Solution

The fourth proportional to 2,181.63, 3,010.60 and 1,186.91 is: 1,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.63 : 3,010.60 = 1,186.91 : x
  2. Step 2: Convert to fraction form
    2,181.63/3,010.60 = 1,186.91/x
  3. Step 3: Cross multiply
    2,181.63x = 3,010.60 × 1,186.91
  4. Step 4: Simplify right side
    2,181.63x = 3,573,311.25
  5. Step 5: Solve for x
    x = 3,573,311.25/2,181.63
  6. Step 6: Final answer
    x = 1,637.91

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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.