Home / 3,158.51-4,358.18-2,217.20

Finding the Fourth Proportional to 3,158.51, 4,358.18 and 2,217.20

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Solution

The fourth proportional to 3,158.51, 4,358.18 and 2,217.20 is: 3,059.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.51 : 4,358.18 = 2,217.20 : x
  2. Step 2: Convert to fraction form
    3,158.51/4,358.18 = 2,217.20/x
  3. Step 3: Cross multiply
    3,158.51x = 4,358.18 × 2,217.20
  4. Step 4: Simplify right side
    3,158.51x = 9,662,923.82
  5. Step 5: Solve for x
    x = 9,662,923.82/3,158.51
  6. Step 6: Final answer
    x = 3,059.33

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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.