Home / 3,207.48-4,419.28-2,157.72

Finding the Fourth Proportional to 3,207.48, 4,419.28 and 2,157.72

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Solution

The fourth proportional to 3,207.48, 4,419.28 and 2,157.72 is: 2,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.48 : 4,419.28 = 2,157.72 : x
  2. Step 2: Convert to fraction form
    3,207.48/4,419.28 = 2,157.72/x
  3. Step 3: Cross multiply
    3,207.48x = 4,419.28 × 2,157.72
  4. Step 4: Simplify right side
    3,207.48x = 9,535,568.84
  5. Step 5: Solve for x
    x = 9,535,568.84/3,207.48
  6. Step 6: Final answer
    x = 2,972.92

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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.