Home / 3,438.12-4,742.88-2,317.64

Finding the Fourth Proportional to 3,438.12, 4,742.88 and 2,317.64

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Solution

The fourth proportional to 3,438.12, 4,742.88 and 2,317.64 is: 3,197.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.12 : 4,742.88 = 2,317.64 : x
  2. Step 2: Convert to fraction form
    3,438.12/4,742.88 = 2,317.64/x
  3. Step 3: Cross multiply
    3,438.12x = 4,742.88 × 2,317.64
  4. Step 4: Simplify right side
    3,438.12x = 10,992,288.40
  5. Step 5: Solve for x
    x = 10,992,288.40/3,438.12
  6. Step 6: Final answer
    x = 3,197.18

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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.