Home / 3,218.16-4,434.84-2,168.40

Finding the Fourth Proportional to 3,218.16, 4,434.84 and 2,168.40

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Solution

The fourth proportional to 3,218.16, 4,434.84 and 2,168.40 is: 2,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.16 : 4,434.84 = 2,168.40 : x
  2. Step 2: Convert to fraction form
    3,218.16/4,434.84 = 2,168.40/x
  3. Step 3: Cross multiply
    3,218.16x = 4,434.84 × 2,168.40
  4. Step 4: Simplify right side
    3,218.16x = 9,616,507.06
  5. Step 5: Solve for x
    x = 9,616,507.06/3,218.16
  6. Step 6: Final answer
    x = 2,988.20

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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.