Home / 3,311.28-4,565.88-2,130.72

Finding the Fourth Proportional to 3,311.28, 4,565.88 and 2,130.72

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Solution

The fourth proportional to 3,311.28, 4,565.88 and 2,130.72 is: 2,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.28 : 4,565.88 = 2,130.72 : x
  2. Step 2: Convert to fraction form
    3,311.28/4,565.88 = 2,130.72/x
  3. Step 3: Cross multiply
    3,311.28x = 4,565.88 × 2,130.72
  4. Step 4: Simplify right side
    3,311.28x = 9,728,611.83
  5. Step 5: Solve for x
    x = 9,728,611.83/3,311.28
  6. Step 6: Final answer
    x = 2,938.02

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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.