Home / 3,867.10-5,333.16-3,120.82

Finding the Fourth Proportional to 3,867.10, 5,333.16 and 3,120.82

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Solution

The fourth proportional to 3,867.10, 5,333.16 and 3,120.82 is: 4,303.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.10 : 5,333.16 = 3,120.82 : x
  2. Step 2: Convert to fraction form
    3,867.10/5,333.16 = 3,120.82/x
  3. Step 3: Cross multiply
    3,867.10x = 5,333.16 × 3,120.82
  4. Step 4: Simplify right side
    3,867.10x = 16,643,832.39
  5. Step 5: Solve for x
    x = 16,643,832.39/3,867.10
  6. Step 6: Final answer
    x = 4,303.96

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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.