Home / 2,181.65-3,010.74-1,186.87

Finding the Fourth Proportional to 2,181.65, 3,010.74 and 1,186.87

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Solution

The fourth proportional to 2,181.65, 3,010.74 and 1,186.87 is: 1,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.65 : 3,010.74 = 1,186.87 : x
  2. Step 2: Convert to fraction form
    2,181.65/3,010.74 = 1,186.87/x
  3. Step 3: Cross multiply
    2,181.65x = 3,010.74 × 1,186.87
  4. Step 4: Simplify right side
    2,181.65x = 3,573,360.67
  5. Step 5: Solve for x
    x = 3,573,360.67/2,181.65
  6. Step 6: Final answer
    x = 1,637.92

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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.