Home / 3,186.64-4,397.70-2,122.60

Finding the Fourth Proportional to 3,186.64, 4,397.70 and 2,122.60

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Solution

The fourth proportional to 3,186.64, 4,397.70 and 2,122.60 is: 2,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.64 : 4,397.70 = 2,122.60 : x
  2. Step 2: Convert to fraction form
    3,186.64/4,397.70 = 2,122.60/x
  3. Step 3: Cross multiply
    3,186.64x = 4,397.70 × 2,122.60
  4. Step 4: Simplify right side
    3,186.64x = 9,334,558.02
  5. Step 5: Solve for x
    x = 9,334,558.02/3,186.64
  6. Step 6: Final answer
    x = 2,929.28

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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.