Home / 2,180.93-3,009.56-1,186.21

Finding the Fourth Proportional to 2,180.93, 3,009.56 and 1,186.21

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Solution

The fourth proportional to 2,180.93, 3,009.56 and 1,186.21 is: 1,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.93 : 3,009.56 = 1,186.21 : x
  2. Step 2: Convert to fraction form
    2,180.93/3,009.56 = 1,186.21/x
  3. Step 3: Cross multiply
    2,180.93x = 3,009.56 × 1,186.21
  4. Step 4: Simplify right side
    2,180.93x = 3,569,955.12
  5. Step 5: Solve for x
    x = 3,569,955.12/2,180.93
  6. Step 6: Final answer
    x = 1,636.90

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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.