Home / 4,120.64-5,686.43-2,232.18

Finding the Fourth Proportional to 4,120.64, 5,686.43 and 2,232.18

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Solution

The fourth proportional to 4,120.64, 5,686.43 and 2,232.18 is: 3,080.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.64 : 5,686.43 = 2,232.18 : x
  2. Step 2: Convert to fraction form
    4,120.64/5,686.43 = 2,232.18/x
  3. Step 3: Cross multiply
    4,120.64x = 5,686.43 × 2,232.18
  4. Step 4: Simplify right side
    4,120.64x = 12,693,124.16
  5. Step 5: Solve for x
    x = 12,693,124.16/4,120.64
  6. Step 6: Final answer
    x = 3,080.38

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Half scale
Find fourth proportional to 8,241.27, 11,372.85 and 4,464.36
Double scale
Find fourth proportional to 4,121.64, 5,687.80 and 2,233.18
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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.